20381661556

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1\times {\mathrm{21503}}^1$

素因数の和:21840

約数の個数: 48

約数和(自身を含む): 38626689024

約数和(自身を除く): 18245027468

約数列:

[1, 2, 4, 17, 34, 53, 68, 106, 212, 263, 526, 901, 1052, 1802, 3604, 4471, 8942, 13939, 17884, 21503, 27878, 43006, 55756, 86012, 236963, 365551, 473926, 731102, 947852, 1139659, 1462204, 2279318, 4558636, 5655289, 11310578, 19374203, 22621156, 38748406, 77496812, 96139913, 192279826, 299730317, 384559652, 599460634, 1198921268, 5095415389, 10190830778, 20381661556]

約数ペア:

[(1, 20381661556), (2, 10190830778), (4, 5095415389), (17, 1198921268), (34, 599460634), (53, 384559652), (68, 299730317), (106, 192279826), (212, 96139913), (263, 77496812), (526, 38748406), (901, 22621156), (1052, 19374203), (1802, 11310578), (3604, 5655289), (4471, 4558636), (8942, 2279318), (13939, 1462204), (17884, 1139659), (21503, 947852), (27878, 731102), (43006, 473926), (55756, 365551), (86012, 236963)]