78821840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{859}}^1$

素因数の和:940

約数の個数: 80

約数和(自身を含む): 194511360

約数和(自身を除く): 115689520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 37, 40, 62, 74, 80, 124, 148, 155, 185, 248, 296, 310, 370, 496, 592, 620, 740, 859, 1147, 1240, 1480, 1718, 2294, 2480, 2960, 3436, 4295, 4588, 5735, 6872, 8590, 9176, 11470, 13744, 17180, 18352, 22940, 26629, 31783, 34360, 45880, 53258, 63566, 68720, 91760, 106516, 127132, 133145, 158915, 213032, 254264, 266290, 317830, 426064, 508528, 532580, 635660, 985273, 1065160, 1271320, 1970546, 2130320, 2542640, 3941092, 4926365, 7882184, 9852730, 15764368, 19705460, 39410920, 78821840]

約数ペア:

[(1, 78821840), (2, 39410920), (4, 19705460), (5, 15764368), (8, 9852730), (10, 7882184), (16, 4926365), (20, 3941092), (31, 2542640), (37, 2130320), (40, 1970546), (62, 1271320), (74, 1065160), (80, 985273), (124, 635660), (148, 532580), (155, 508528), (185, 426064), (248, 317830), (296, 266290), (310, 254264), (370, 213032), (496, 158915), (592, 133145), (620, 127132), (740, 106516), (859, 91760), (1147, 68720), (1240, 63566), (1480, 53258), (1718, 45880), (2294, 34360), (2480, 31783), (2960, 26629), (3436, 22940), (4295, 18352), (4588, 17180), (5735, 13744), (6872, 11470), (8590, 9176)]