38722120

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 89910000

約数和(自身を除く): 51187880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 89, 146, 149, 178, 292, 298, 356, 365, 445, 584, 596, 712, 730, 745, 890, 1192, 1460, 1490, 1780, 2920, 2980, 3560, 5960, 6497, 10877, 12994, 13261, 21754, 25988, 26522, 32485, 43508, 51976, 53044, 54385, 64970, 66305, 87016, 106088, 108770, 129940, 132610, 217540, 259880, 265220, 435080, 530440, 968053, 1936106, 3872212, 4840265, 7744424, 9680530, 19361060, 38722120]

約数ペア:

[(1, 38722120), (2, 19361060), (4, 9680530), (5, 7744424), (8, 4840265), (10, 3872212), (20, 1936106), (40, 968053), (73, 530440), (89, 435080), (146, 265220), (149, 259880), (178, 217540), (292, 132610), (298, 129940), (356, 108770), (365, 106088), (445, 87016), (584, 66305), (596, 64970), (712, 54385), (730, 53044), (745, 51976), (890, 43508), (1192, 32485), (1460, 26522), (1490, 25988), (1780, 21754), (2920, 13261), (2980, 12994), (3560, 10877), (5960, 6497)]