81641820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:220

約数の個数: 192

約数和(自身を含む): 268240896

約数和(自身を除く): 186599076

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 47, 51, 52, 60, 65, 68, 78, 85, 94, 102, 130, 131, 141, 156, 170, 188, 195, 204, 221, 235, 255, 260, 262, 282, 340, 390, 393, 442, 470, 510, 524, 564, 611, 655, 663, 705, 780, 786, 799, 884, 940, 1020, 1105, 1222, 1310, 1326, 1410, 1572, 1598, 1703, 1833, 1965, 2210, 2227, 2397, 2444, 2620, 2652, 2820, 3055, 3196, 3315, 3406, 3666, 3930, 3995, 4420, 4454, 4794, 5109, 6110, 6157, 6630, 6681, 6812, 7332, 7860, 7990, 8515, 8908, 9165, 9588, 10218, 10387, 11135, 11985, 12220, 12314, 13260, 13362, 15980, 17030, 18330, 18471, 20436, 20774, 22270, 23970, 24628, 25545, 26724, 28951, 30785, 31161, 33405, 34060, 36660, 36942, 41548, 44540, 47940, 51090, 51935, 57902, 61570, 62322, 66810, 73884, 80041, 86853, 92355, 102180, 103870, 104669, 115804, 123140, 124644, 133620, 144755, 155805, 160082, 173706, 184710, 207740, 209338, 240123, 289510, 311610, 314007, 320164, 347412, 369420, 400205, 418676, 434265, 480246, 523345, 579020, 623220, 628014, 800410, 868530, 960492, 1046690, 1200615, 1256028, 1360697, 1570035, 1600820, 1737060, 2093380, 2401230, 2721394, 3140070, 4082091, 4802460, 5442788, 6280140, 6803485, 8164182, 13606970, 16328364, 20410455, 27213940, 40820910, 81641820]

約数ペア:

[(1, 81641820), (2, 40820910), (3, 27213940), (4, 20410455), (5, 16328364), (6, 13606970), (10, 8164182), (12, 6803485), (13, 6280140), (15, 5442788), (17, 4802460), (20, 4082091), (26, 3140070), (30, 2721394), (34, 2401230), (39, 2093380), (47, 1737060), (51, 1600820), (52, 1570035), (60, 1360697), (65, 1256028), (68, 1200615), (78, 1046690), (85, 960492), (94, 868530), (102, 800410), (130, 628014), (131, 623220), (141, 579020), (156, 523345), (170, 480246), (188, 434265), (195, 418676), (204, 400205), (221, 369420), (235, 347412), (255, 320164), (260, 314007), (262, 311610), (282, 289510), (340, 240123), (390, 209338), (393, 207740), (442, 184710), (470, 173706), (510, 160082), (524, 155805), (564, 144755), (611, 133620), (655, 124644), (663, 123140), (705, 115804), (780, 104669), (786, 103870), (799, 102180), (884, 92355), (940, 86853), (1020, 80041), (1105, 73884), (1222, 66810), (1310, 62322), (1326, 61570), (1410, 57902), (1572, 51935), (1598, 51090), (1703, 47940), (1833, 44540), (1965, 41548), (2210, 36942), (2227, 36660), (2397, 34060), (2444, 33405), (2620, 31161), (2652, 30785), (2820, 28951), (3055, 26724), (3196, 25545), (3315, 24628), (3406, 23970), (3666, 22270), (3930, 20774), (3995, 20436), (4420, 18471), (4454, 18330), (4794, 17030), (5109, 15980), (6110, 13362), (6157, 13260), (6630, 12314), (6681, 12220), (6812, 11985), (7332, 11135), (7860, 10387), (7990, 10218), (8515, 9588), (8908, 9165)]