21661100

素因数分解:

$2^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:195

約数の個数: 72

約数和(自身を含む): 49403088

約数和(自身を除く): 27741988

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 61, 67, 100, 106, 122, 134, 212, 244, 265, 268, 305, 335, 530, 610, 670, 1060, 1220, 1325, 1340, 1525, 1675, 2650, 3050, 3233, 3350, 3551, 4087, 5300, 6100, 6466, 6700, 7102, 8174, 12932, 14204, 16165, 16348, 17755, 20435, 32330, 35510, 40870, 64660, 71020, 80825, 81740, 88775, 102175, 161650, 177550, 204350, 216611, 323300, 355100, 408700, 433222, 866444, 1083055, 2166110, 4332220, 5415275, 10830550, 21661100]

約数ペア:

[(1, 21661100), (2, 10830550), (4, 5415275), (5, 4332220), (10, 2166110), (20, 1083055), (25, 866444), (50, 433222), (53, 408700), (61, 355100), (67, 323300), (100, 216611), (106, 204350), (122, 177550), (134, 161650), (212, 102175), (244, 88775), (265, 81740), (268, 80825), (305, 71020), (335, 64660), (530, 40870), (610, 35510), (670, 32330), (1060, 20435), (1220, 17755), (1325, 16348), (1340, 16165), (1525, 14204), (1675, 12932), (2650, 8174), (3050, 7102), (3233, 6700), (3350, 6466), (3551, 6100), (4087, 5300)]