19880458840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1102021}}^1$

素因数の和:1102084

約数の個数: 64

約数和(自身を含む): 49987717920

約数和(自身を除く): 30107259080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1640, 1804, 2255, 3608, 4510, 9020, 18040, 1102021, 2204042, 4408084, 5510105, 8816168, 11020210, 12122231, 22040420, 24244462, 44080840, 45182861, 48488924, 60611155, 90365722, 96977848, 121222310, 180731444, 225914305, 242444620, 361462888, 451828610, 484889240, 497011471, 903657220, 994022942, 1807314440, 1988045884, 2485057355, 3976091768, 4970114710, 9940229420, 19880458840]

約数ペア:

[(1, 19880458840), (2, 9940229420), (4, 4970114710), (5, 3976091768), (8, 2485057355), (10, 1988045884), (11, 1807314440), (20, 994022942), (22, 903657220), (40, 497011471), (41, 484889240), (44, 451828610), (55, 361462888), (82, 242444620), (88, 225914305), (110, 180731444), (164, 121222310), (205, 96977848), (220, 90365722), (328, 60611155), (410, 48488924), (440, 45182861), (451, 44080840), (820, 24244462), (902, 22040420), (1640, 12122231), (1804, 11020210), (2255, 8816168), (3608, 5510105), (4510, 4408084), (9020, 2204042), (18040, 1102021)]