21609510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{827}}^1$

素因数の和:917

約数の個数: 64

約数和(自身を含む): 56754432

約数和(自身を除く): 35144922

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 67, 78, 130, 134, 195, 201, 335, 390, 402, 670, 827, 871, 1005, 1654, 1742, 2010, 2481, 2613, 4135, 4355, 4962, 5226, 8270, 8710, 10751, 12405, 13065, 21502, 24810, 26130, 32253, 53755, 55409, 64506, 107510, 110818, 161265, 166227, 277045, 322530, 332454, 554090, 720317, 831135, 1440634, 1662270, 2160951, 3601585, 4321902, 7203170, 10804755, 21609510]

約数ペア:

[(1, 21609510), (2, 10804755), (3, 7203170), (5, 4321902), (6, 3601585), (10, 2160951), (13, 1662270), (15, 1440634), (26, 831135), (30, 720317), (39, 554090), (65, 332454), (67, 322530), (78, 277045), (130, 166227), (134, 161265), (195, 110818), (201, 107510), (335, 64506), (390, 55409), (402, 53755), (670, 32253), (827, 26130), (871, 24810), (1005, 21502), (1654, 13065), (1742, 12405), (2010, 10751), (2481, 8710), (2613, 8270), (4135, 5226), (4355, 4962)]