21152610

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{499}}^1$

素因数の和:672

約数の個数: 64

約数和(自身を含む): 56880000

約数和(自身を除く): 35727390

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 157, 270, 314, 471, 499, 785, 942, 998, 1413, 1497, 1570, 2355, 2495, 2826, 2994, 4239, 4491, 4710, 4990, 7065, 7485, 8478, 8982, 13473, 14130, 14970, 21195, 22455, 26946, 42390, 44910, 67365, 78343, 134730, 156686, 235029, 391715, 470058, 705087, 783430, 1175145, 1410174, 2115261, 2350290, 3525435, 4230522, 7050870, 10576305, 21152610]

約数ペア:

[(1, 21152610), (2, 10576305), (3, 7050870), (5, 4230522), (6, 3525435), (9, 2350290), (10, 2115261), (15, 1410174), (18, 1175145), (27, 783430), (30, 705087), (45, 470058), (54, 391715), (90, 235029), (135, 156686), (157, 134730), (270, 78343), (314, 67365), (471, 44910), (499, 42390), (785, 26946), (942, 22455), (998, 21195), (1413, 14970), (1497, 14130), (1570, 13473), (2355, 8982), (2495, 8478), (2826, 7485), (2994, 7065), (4239, 4990), (4491, 4710)]