30901720

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{5639}}^1$

素因数の和:5787

約数の個数: 32

約数和(自身を含む): 70048800

約数和(自身を除く): 39147080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 5639, 11278, 22556, 28195, 45112, 56390, 112780, 225560, 772543, 1545086, 3090172, 3862715, 6180344, 7725430, 15450860, 30901720]

約数ペア:

[(1, 30901720), (2, 15450860), (4, 7725430), (5, 6180344), (8, 3862715), (10, 3090172), (20, 1545086), (40, 772543), (137, 225560), (274, 112780), (548, 56390), (685, 45112), (1096, 28195), (1370, 22556), (2740, 11278), (5480, 5639)]