21167080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{659}}^1$

素因数の和:754

約数の個数: 64

約数和(自身を含む): 52747200

約数和(自身を除く): 31580120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 659, 730, 803, 1318, 1460, 1606, 2636, 2920, 3212, 3295, 4015, 5272, 6424, 6590, 7249, 8030, 13180, 14498, 16060, 26360, 28996, 32120, 36245, 48107, 57992, 72490, 96214, 144980, 192428, 240535, 289960, 384856, 481070, 529177, 962140, 1058354, 1924280, 2116708, 2645885, 4233416, 5291770, 10583540, 21167080]

約数ペア:

[(1, 21167080), (2, 10583540), (4, 5291770), (5, 4233416), (8, 2645885), (10, 2116708), (11, 1924280), (20, 1058354), (22, 962140), (40, 529177), (44, 481070), (55, 384856), (73, 289960), (88, 240535), (110, 192428), (146, 144980), (220, 96214), (292, 72490), (365, 57992), (440, 48107), (584, 36245), (659, 32120), (730, 28996), (803, 26360), (1318, 16060), (1460, 14498), (1606, 13180), (2636, 8030), (2920, 7249), (3212, 6590), (3295, 6424), (4015, 5272)]