21548380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1033}}^1$

素因数の和:1198

約数の個数: 48

約数和(自身を含む): 52113600

約数和(自身を除く): 30565220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1033, 1043, 1490, 2066, 2086, 2980, 4132, 4172, 5165, 5215, 7231, 10330, 10430, 14462, 20660, 20860, 28924, 36155, 72310, 144620, 153917, 307834, 615668, 769585, 1077419, 1539170, 2154838, 3078340, 4309676, 5387095, 10774190, 21548380]

約数ペア:

[(1, 21548380), (2, 10774190), (4, 5387095), (5, 4309676), (7, 3078340), (10, 2154838), (14, 1539170), (20, 1077419), (28, 769585), (35, 615668), (70, 307834), (140, 153917), (149, 144620), (298, 72310), (596, 36155), (745, 28924), (1033, 20860), (1043, 20660), (1490, 14462), (2066, 10430), (2086, 10330), (2980, 7231), (4132, 5215), (4172, 5165)]