30890680

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 71928000

約数和(自身を除く): 41037320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 73, 142, 146, 149, 284, 292, 298, 355, 365, 568, 584, 596, 710, 730, 745, 1192, 1420, 1460, 1490, 2840, 2920, 2980, 5183, 5960, 10366, 10579, 10877, 20732, 21158, 21754, 25915, 41464, 42316, 43508, 51830, 52895, 54385, 84632, 87016, 103660, 105790, 108770, 207320, 211580, 217540, 423160, 435080, 772267, 1544534, 3089068, 3861335, 6178136, 7722670, 15445340, 30890680]

約数ペア:

[(1, 30890680), (2, 15445340), (4, 7722670), (5, 6178136), (8, 3861335), (10, 3089068), (20, 1544534), (40, 772267), (71, 435080), (73, 423160), (142, 217540), (146, 211580), (149, 207320), (284, 108770), (292, 105790), (298, 103660), (355, 87016), (365, 84632), (568, 54385), (584, 52895), (596, 51830), (710, 43508), (730, 42316), (745, 41464), (1192, 25915), (1420, 21754), (1460, 21158), (1490, 20732), (2840, 10877), (2920, 10579), (2980, 10366), (5183, 5960)]