81418040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{9739}}^1$

素因数の和:9780

約数の個数: 64

約数和(自身を含む): 210384000

約数和(自身を除く): 128965960

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 4180, 8360, 9739, 19478, 38956, 48695, 77912, 97390, 107129, 185041, 194780, 214258, 370082, 389560, 428516, 535645, 740164, 857032, 925205, 1071290, 1480328, 1850410, 2035451, 2142580, 3700820, 4070902, 4285160, 7401640, 8141804, 10177255, 16283608, 20354510, 40709020, 81418040]

約数ペア:

[(1, 81418040), (2, 40709020), (4, 20354510), (5, 16283608), (8, 10177255), (10, 8141804), (11, 7401640), (19, 4285160), (20, 4070902), (22, 3700820), (38, 2142580), (40, 2035451), (44, 1850410), (55, 1480328), (76, 1071290), (88, 925205), (95, 857032), (110, 740164), (152, 535645), (190, 428516), (209, 389560), (220, 370082), (380, 214258), (418, 194780), (440, 185041), (760, 107129), (836, 97390), (1045, 77912), (1672, 48695), (2090, 38956), (4180, 19478), (8360, 9739)]