21955900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 50465520

約数和(自身を除く): 28509620

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 67, 100, 113, 116, 134, 145, 226, 268, 290, 335, 452, 565, 580, 670, 725, 1130, 1340, 1450, 1675, 1943, 2260, 2825, 2900, 3277, 3350, 3886, 5650, 6554, 6700, 7571, 7772, 9715, 11300, 13108, 15142, 16385, 19430, 30284, 32770, 37855, 38860, 48575, 65540, 75710, 81925, 97150, 151420, 163850, 189275, 194300, 219559, 327700, 378550, 439118, 757100, 878236, 1097795, 2195590, 4391180, 5488975, 10977950, 21955900]

約数ペア:

[(1, 21955900), (2, 10977950), (4, 5488975), (5, 4391180), (10, 2195590), (20, 1097795), (25, 878236), (29, 757100), (50, 439118), (58, 378550), (67, 327700), (100, 219559), (113, 194300), (116, 189275), (134, 163850), (145, 151420), (226, 97150), (268, 81925), (290, 75710), (335, 65540), (452, 48575), (565, 38860), (580, 37855), (670, 32770), (725, 30284), (1130, 19430), (1340, 16385), (1450, 15142), (1675, 13108), (1943, 11300), (2260, 9715), (2825, 7772), (2900, 7571), (3277, 6700), (3350, 6554), (3886, 5650)]