217805720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{6781}}^1$

素因数の和:6876

約数の個数: 64

約数和(自身を含む): 542017440

約数和(自身を除く): 324211720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 730, 803, 1460, 1606, 2920, 3212, 4015, 6424, 6781, 8030, 13562, 16060, 27124, 32120, 33905, 54248, 67810, 74591, 135620, 149182, 271240, 298364, 372955, 495013, 596728, 745910, 990026, 1491820, 1980052, 2475065, 2983640, 3960104, 4950130, 5445143, 9900260, 10890286, 19800520, 21780572, 27225715, 43561144, 54451430, 108902860, 217805720]

約数ペア:

[(1, 217805720), (2, 108902860), (4, 54451430), (5, 43561144), (8, 27225715), (10, 21780572), (11, 19800520), (20, 10890286), (22, 9900260), (40, 5445143), (44, 4950130), (55, 3960104), (73, 2983640), (88, 2475065), (110, 1980052), (146, 1491820), (220, 990026), (292, 745910), (365, 596728), (440, 495013), (584, 372955), (730, 298364), (803, 271240), (1460, 149182), (1606, 135620), (2920, 74591), (3212, 67810), (4015, 54248), (6424, 33905), (6781, 32120), (8030, 27124), (13562, 16060)]