256880520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{419}}^1$

素因数の和:580

約数の個数: 192

約数和(自身を含む): 908107200

約数和(自身を除く): 651226680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 131, 156, 180, 195, 234, 260, 262, 312, 360, 390, 393, 419, 468, 520, 524, 585, 655, 780, 786, 838, 936, 1048, 1170, 1179, 1257, 1310, 1560, 1572, 1676, 1703, 1965, 2095, 2340, 2358, 2514, 2620, 3144, 3352, 3406, 3771, 3930, 4190, 4680, 4716, 5028, 5109, 5240, 5447, 5895, 6285, 6812, 7542, 7860, 8380, 8515, 9432, 10056, 10218, 10894, 11790, 12570, 13624, 15084, 15327, 15720, 16341, 16760, 17030, 18855, 20436, 21788, 23580, 25140, 25545, 27235, 30168, 30654, 32682, 34060, 37710, 40872, 43576, 47160, 49023, 50280, 51090, 54470, 54889, 61308, 65364, 68120, 75420, 76635, 81705, 98046, 102180, 108940, 109778, 122616, 130728, 150840, 153270, 163410, 164667, 196092, 204360, 217880, 219556, 245115, 274445, 306540, 326820, 329334, 392184, 439112, 490230, 494001, 548890, 613080, 653640, 658668, 713557, 823335, 980460, 988002, 1097780, 1317336, 1427114, 1646670, 1960920, 1976004, 2140671, 2195560, 2470005, 2854228, 3293340, 3567785, 3952008, 4281342, 4940010, 5708456, 6422013, 6586680, 7135570, 8562684, 9880020, 10703355, 12844026, 14271140, 17125368, 19760040, 21406710, 25688052, 28542280, 32110065, 42813420, 51376104, 64220130, 85626840, 128440260, 256880520]

約数ペア:

[(1, 256880520), (2, 128440260), (3, 85626840), (4, 64220130), (5, 51376104), (6, 42813420), (8, 32110065), (9, 28542280), (10, 25688052), (12, 21406710), (13, 19760040), (15, 17125368), (18, 14271140), (20, 12844026), (24, 10703355), (26, 9880020), (30, 8562684), (36, 7135570), (39, 6586680), (40, 6422013), (45, 5708456), (52, 4940010), (60, 4281342), (65, 3952008), (72, 3567785), (78, 3293340), (90, 2854228), (104, 2470005), (117, 2195560), (120, 2140671), (130, 1976004), (131, 1960920), (156, 1646670), (180, 1427114), (195, 1317336), (234, 1097780), (260, 988002), (262, 980460), (312, 823335), (360, 713557), (390, 658668), (393, 653640), (419, 613080), (468, 548890), (520, 494001), (524, 490230), (585, 439112), (655, 392184), (780, 329334), (786, 326820), (838, 306540), (936, 274445), (1048, 245115), (1170, 219556), (1179, 217880), (1257, 204360), (1310, 196092), (1560, 164667), (1572, 163410), (1676, 153270), (1703, 150840), (1965, 130728), (2095, 122616), (2340, 109778), (2358, 108940), (2514, 102180), (2620, 98046), (3144, 81705), (3352, 76635), (3406, 75420), (3771, 68120), (3930, 65364), (4190, 61308), (4680, 54889), (4716, 54470), (5028, 51090), (5109, 50280), (5240, 49023), (5447, 47160), (5895, 43576), (6285, 40872), (6812, 37710), (7542, 34060), (7860, 32682), (8380, 30654), (8515, 30168), (9432, 27235), (10056, 25545), (10218, 25140), (10894, 23580), (11790, 21788), (12570, 20436), (13624, 18855), (15084, 17030), (15327, 16760), (15720, 16341)]