1278408040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{383}}^1$

素因数の和:552

約数の個数: 192

約数和(自身を含む): 3640412160

約数和(自身を除く): 2362004120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 91, 98, 104, 130, 131, 140, 182, 196, 245, 260, 262, 280, 364, 383, 392, 455, 490, 520, 524, 637, 655, 728, 766, 910, 917, 980, 1048, 1274, 1310, 1532, 1703, 1820, 1834, 1915, 1960, 2548, 2620, 2681, 3064, 3185, 3406, 3640, 3668, 3830, 4585, 4979, 5096, 5240, 5362, 6370, 6419, 6812, 7336, 7660, 8515, 9170, 9958, 10724, 11921, 12740, 12838, 13405, 13624, 15320, 17030, 18340, 18767, 19916, 21448, 23842, 24895, 25480, 25676, 26810, 32095, 34060, 34853, 36680, 37534, 39832, 47684, 49790, 50173, 51352, 53620, 59605, 64190, 68120, 69706, 75068, 83447, 93835, 95368, 99580, 100346, 107240, 119210, 128380, 139412, 150136, 166894, 174265, 187670, 199160, 200692, 238420, 243971, 250865, 256760, 278824, 333788, 348530, 351211, 375340, 401384, 417235, 476840, 487942, 501730, 652249, 667576, 697060, 702422, 750680, 834470, 975884, 1003460, 1219855, 1304498, 1394120, 1404844, 1668940, 1756055, 1951768, 2006920, 2439710, 2458477, 2608996, 2809688, 3261245, 3337880, 3512110, 4565743, 4879420, 4916954, 5217992, 6522490, 7024220, 9131486, 9758840, 9833908, 12292385, 13044980, 14048440, 18262972, 19667816, 22828715, 24584770, 26089960, 31960201, 36525944, 45657430, 49169540, 63920402, 91314860, 98339080, 127840804, 159801005, 182629720, 255681608, 319602010, 639204020, 1278408040]

約数ペア:

[(1, 1278408040), (2, 639204020), (4, 319602010), (5, 255681608), (7, 182629720), (8, 159801005), (10, 127840804), (13, 98339080), (14, 91314860), (20, 63920402), (26, 49169540), (28, 45657430), (35, 36525944), (40, 31960201), (49, 26089960), (52, 24584770), (56, 22828715), (65, 19667816), (70, 18262972), (91, 14048440), (98, 13044980), (104, 12292385), (130, 9833908), (131, 9758840), (140, 9131486), (182, 7024220), (196, 6522490), (245, 5217992), (260, 4916954), (262, 4879420), (280, 4565743), (364, 3512110), (383, 3337880), (392, 3261245), (455, 2809688), (490, 2608996), (520, 2458477), (524, 2439710), (637, 2006920), (655, 1951768), (728, 1756055), (766, 1668940), (910, 1404844), (917, 1394120), (980, 1304498), (1048, 1219855), (1274, 1003460), (1310, 975884), (1532, 834470), (1703, 750680), (1820, 702422), (1834, 697060), (1915, 667576), (1960, 652249), (2548, 501730), (2620, 487942), (2681, 476840), (3064, 417235), (3185, 401384), (3406, 375340), (3640, 351211), (3668, 348530), (3830, 333788), (4585, 278824), (4979, 256760), (5096, 250865), (5240, 243971), (5362, 238420), (6370, 200692), (6419, 199160), (6812, 187670), (7336, 174265), (7660, 166894), (8515, 150136), (9170, 139412), (9958, 128380), (10724, 119210), (11921, 107240), (12740, 100346), (12838, 99580), (13405, 95368), (13624, 93835), (15320, 83447), (17030, 75068), (18340, 69706), (18767, 68120), (19916, 64190), (21448, 59605), (23842, 53620), (24895, 51352), (25480, 50173), (25676, 49790), (26810, 47684), (32095, 39832), (34060, 37534), (34853, 36680)]