19706904868

素因数分解:

$2^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{631}}^1\times {\mathrm{2017}}^1$

素因数の和:2745

約数の個数: 72

約数和(自身を含む): 40710001920

約数和(自身を除く): 21003097052

約数列:

[1, 2, 4, 7, 14, 28, 49, 79, 98, 158, 196, 316, 553, 631, 1106, 1262, 2017, 2212, 2524, 3871, 4034, 4417, 7742, 8068, 8834, 14119, 15484, 17668, 28238, 30919, 49849, 56476, 61838, 98833, 99698, 123676, 159343, 197666, 199396, 318686, 348943, 395332, 637372, 697886, 1115401, 1272727, 1395772, 2230802, 2442601, 2545454, 4461604, 4885202, 5090908, 7807807, 8909089, 9770404, 15615614, 17818178, 31231228, 35636356, 62363623, 100545433, 124727246, 201090866, 249454492, 402181732, 703818031, 1407636062, 2815272124, 4926726217, 9853452434, 19706904868]

約数ペア:

[(1, 19706904868), (2, 9853452434), (4, 4926726217), (7, 2815272124), (14, 1407636062), (28, 703818031), (49, 402181732), (79, 249454492), (98, 201090866), (158, 124727246), (196, 100545433), (316, 62363623), (553, 35636356), (631, 31231228), (1106, 17818178), (1262, 15615614), (2017, 9770404), (2212, 8909089), (2524, 7807807), (3871, 5090908), (4034, 4885202), (4417, 4461604), (7742, 2545454), (8068, 2442601), (8834, 2230802), (14119, 1395772), (15484, 1272727), (17668, 1115401), (28238, 697886), (30919, 637372), (49849, 395332), (56476, 348943), (61838, 318686), (98833, 199396), (99698, 197666), (123676, 159343)]