19981038

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{709}}^1$

素因数の和:793

約数の個数: 64

約数和(自身を含む): 50711040

約数和(自身を除く): 30730002

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 61, 66, 77, 122, 154, 183, 231, 366, 427, 462, 671, 709, 854, 1281, 1342, 1418, 2013, 2127, 2562, 4026, 4254, 4697, 4963, 7799, 9394, 9926, 14091, 14889, 15598, 23397, 28182, 29778, 43249, 46794, 54593, 86498, 109186, 129747, 163779, 259494, 302743, 327558, 475739, 605486, 908229, 951478, 1427217, 1816458, 2854434, 3330173, 6660346, 9990519, 19981038]

約数ペア:

[(1, 19981038), (2, 9990519), (3, 6660346), (6, 3330173), (7, 2854434), (11, 1816458), (14, 1427217), (21, 951478), (22, 908229), (33, 605486), (42, 475739), (61, 327558), (66, 302743), (77, 259494), (122, 163779), (154, 129747), (183, 109186), (231, 86498), (366, 54593), (427, 46794), (462, 43249), (671, 29778), (709, 28182), (854, 23397), (1281, 15598), (1342, 14889), (1418, 14091), (2013, 9926), (2127, 9394), (2562, 7799), (4026, 4963), (4254, 4697)]