20199995478

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{211063}}^1$

素因数の和:211493

約数の個数: 48

約数和(自身を含む): 47248787040

約数和(自身を除く): 27048791562

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 409, 818, 1227, 2454, 3681, 5317, 7362, 10634, 15951, 31902, 47853, 95706, 211063, 422126, 633189, 1266378, 1899567, 2743819, 3799134, 5487638, 8231457, 16462914, 24694371, 49388742, 86324767, 172649534, 258974301, 517948602, 776922903, 1122221971, 1553845806, 2244443942, 3366665913, 6733331826, 10099997739, 20199995478]

約数ペア:

[(1, 20199995478), (2, 10099997739), (3, 6733331826), (6, 3366665913), (9, 2244443942), (13, 1553845806), (18, 1122221971), (26, 776922903), (39, 517948602), (78, 258974301), (117, 172649534), (234, 86324767), (409, 49388742), (818, 24694371), (1227, 16462914), (2454, 8231457), (3681, 5487638), (5317, 3799134), (7362, 2743819), (10634, 1899567), (15951, 1266378), (31902, 633189), (47853, 422126), (95706, 211063)]