20984913196

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{2591}}^1\times {\mathrm{11981}}^1$

素因数の和:14602

約数の個数: 36

約数和(自身を含む): 39784457664

約数和(自身を除く): 18799544468

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 2591, 5182, 10364, 11981, 23962, 33683, 47924, 67366, 134732, 155753, 311506, 437879, 623012, 875758, 1751516, 2024789, 4049578, 8099156, 31042771, 62085542, 124171084, 403556023, 807112046, 1614224092, 5246228299, 10492456598, 20984913196]

約数ペア:

[(1, 20984913196), (2, 10492456598), (4, 5246228299), (13, 1614224092), (26, 807112046), (52, 403556023), (169, 124171084), (338, 62085542), (676, 31042771), (2591, 8099156), (5182, 4049578), (10364, 2024789), (11981, 1751516), (23962, 875758), (33683, 623012), (47924, 437879), (67366, 311506), (134732, 155753)]