20528690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1327}}^1$

素因数の和:1371

約数の個数: 64

約数和(自身を含む): 48190464

約数和(自身を除く): 27661774

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 26, 34, 35, 65, 70, 85, 91, 119, 130, 170, 182, 221, 238, 442, 455, 595, 910, 1105, 1190, 1327, 1547, 2210, 2654, 3094, 6635, 7735, 9289, 13270, 15470, 17251, 18578, 22559, 34502, 45118, 46445, 86255, 92890, 112795, 120757, 157913, 172510, 225590, 241514, 293267, 315826, 586534, 603785, 789565, 1207570, 1466335, 1579130, 2052869, 2932670, 4105738, 10264345, 20528690]

約数ペア:

[(1, 20528690), (2, 10264345), (5, 4105738), (7, 2932670), (10, 2052869), (13, 1579130), (14, 1466335), (17, 1207570), (26, 789565), (34, 603785), (35, 586534), (65, 315826), (70, 293267), (85, 241514), (91, 225590), (119, 172510), (130, 157913), (170, 120757), (182, 112795), (221, 92890), (238, 86255), (442, 46445), (455, 45118), (595, 34502), (910, 22559), (1105, 18578), (1190, 17251), (1327, 15470), (1547, 13270), (2210, 9289), (2654, 7735), (3094, 6635)]