20186984560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{691}}^1\times {\mathrm{21481}}^1$

素因数の和:22202

約数の個数: 80

約数和(自身を含む): 49769841312

約数和(自身を除く): 29582856752

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 691, 1360, 1382, 2764, 3455, 5528, 6910, 11056, 11747, 13820, 21481, 23494, 27640, 42962, 46988, 55280, 58735, 85924, 93976, 107405, 117470, 171848, 187952, 214810, 234940, 343696, 365177, 429620, 469880, 730354, 859240, 939760, 1460708, 1718480, 1825885, 2921416, 3651770, 5842832, 7303540, 14607080, 14843371, 29214160, 29686742, 59373484, 74216855, 118746968, 148433710, 237493936, 252337307, 296867420, 504674614, 593734840, 1009349228, 1187469680, 1261686535, 2018698456, 2523373070, 4037396912, 5046746140, 10093492280, 20186984560]

約数ペア:

[(1, 20186984560), (2, 10093492280), (4, 5046746140), (5, 4037396912), (8, 2523373070), (10, 2018698456), (16, 1261686535), (17, 1187469680), (20, 1009349228), (34, 593734840), (40, 504674614), (68, 296867420), (80, 252337307), (85, 237493936), (136, 148433710), (170, 118746968), (272, 74216855), (340, 59373484), (680, 29686742), (691, 29214160), (1360, 14843371), (1382, 14607080), (2764, 7303540), (3455, 5842832), (5528, 3651770), (6910, 2921416), (11056, 1825885), (11747, 1718480), (13820, 1460708), (21481, 939760), (23494, 859240), (27640, 730354), (42962, 469880), (46988, 429620), (55280, 365177), (58735, 343696), (85924, 234940), (93976, 214810), (107405, 187952), (117470, 171848)]