278403780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{65353}}^1$

素因数の和:65436

約数の個数: 48

約数和(自身を含む): 790521984

約数和(自身を除く): 512118204

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 65353, 130706, 196059, 261412, 326765, 392118, 653530, 784236, 980295, 1307060, 1960590, 3921180, 4640063, 9280126, 13920189, 18560252, 23200315, 27840378, 46400630, 55680756, 69600945, 92801260, 139201890, 278403780]

約数ペア:

[(1, 278403780), (2, 139201890), (3, 92801260), (4, 69600945), (5, 55680756), (6, 46400630), (10, 27840378), (12, 23200315), (15, 18560252), (20, 13920189), (30, 9280126), (60, 4640063), (71, 3921180), (142, 1960590), (213, 1307060), (284, 980295), (355, 784236), (426, 653530), (710, 392118), (852, 326765), (1065, 261412), (1420, 196059), (2130, 130706), (4260, 65353)]