28905570

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{809}}^1$

素因数の和:1219

約数の個数: 48

約数和(自身を含む): 75436920

約数和(自身を除く): 46531350

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 397, 794, 809, 1191, 1618, 1985, 2382, 2427, 3573, 3970, 4045, 4854, 5955, 7146, 7281, 8090, 11910, 12135, 14562, 17865, 24270, 35730, 36405, 72810, 321173, 642346, 963519, 1605865, 1927038, 2890557, 3211730, 4817595, 5781114, 9635190, 14452785, 28905570]

約数ペア:

[(1, 28905570), (2, 14452785), (3, 9635190), (5, 5781114), (6, 4817595), (9, 3211730), (10, 2890557), (15, 1927038), (18, 1605865), (30, 963519), (45, 642346), (90, 321173), (397, 72810), (794, 36405), (809, 35730), (1191, 24270), (1618, 17865), (1985, 14562), (2382, 12135), (2427, 11910), (3573, 8090), (3970, 7281), (4045, 7146), (4854, 5955)]