291275480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{1831}}^1$

素因数の和:1980

約数の個数: 64

約数和(自身を含む): 678646080

約数和(自身を除く): 387370600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 97, 164, 194, 205, 328, 388, 410, 485, 776, 820, 970, 1640, 1831, 1940, 3662, 3880, 3977, 7324, 7954, 9155, 14648, 15908, 18310, 19885, 31816, 36620, 39770, 73240, 75071, 79540, 150142, 159080, 177607, 300284, 355214, 375355, 600568, 710428, 750710, 888035, 1420856, 1501420, 1776070, 3002840, 3552140, 7104280, 7281887, 14563774, 29127548, 36409435, 58255096, 72818870, 145637740, 291275480]

約数ペア:

[(1, 291275480), (2, 145637740), (4, 72818870), (5, 58255096), (8, 36409435), (10, 29127548), (20, 14563774), (40, 7281887), (41, 7104280), (82, 3552140), (97, 3002840), (164, 1776070), (194, 1501420), (205, 1420856), (328, 888035), (388, 750710), (410, 710428), (485, 600568), (776, 375355), (820, 355214), (970, 300284), (1640, 177607), (1831, 159080), (1940, 150142), (3662, 79540), (3880, 75071), (3977, 73240), (7324, 39770), (7954, 36620), (9155, 31816), (14648, 19885), (15908, 18310)]