20101172

素因数分解:

$2^2\times 7^5\times {\mathrm{13}}^1\times {\mathrm{23}}^1$

素因数の和:75

約数の個数: 72

約数和(自身を含む): 46118016

約数和(自身を除く): 26016844

約数列:

[1, 2, 4, 7, 13, 14, 23, 26, 28, 46, 49, 52, 91, 92, 98, 161, 182, 196, 299, 322, 343, 364, 598, 637, 644, 686, 1127, 1196, 1274, 1372, 2093, 2254, 2401, 2548, 4186, 4459, 4508, 4802, 7889, 8372, 8918, 9604, 14651, 15778, 16807, 17836, 29302, 31213, 31556, 33614, 55223, 58604, 62426, 67228, 102557, 110446, 124852, 205114, 218491, 220892, 386561, 410228, 436982, 717899, 773122, 873964, 1435798, 1546244, 2871596, 5025293, 10050586, 20101172]

約数ペア:

[(1, 20101172), (2, 10050586), (4, 5025293), (7, 2871596), (13, 1546244), (14, 1435798), (23, 873964), (26, 773122), (28, 717899), (46, 436982), (49, 410228), (52, 386561), (91, 220892), (92, 218491), (98, 205114), (161, 124852), (182, 110446), (196, 102557), (299, 67228), (322, 62426), (343, 58604), (364, 55223), (598, 33614), (637, 31556), (644, 31213), (686, 29302), (1127, 17836), (1196, 16807), (1274, 15778), (1372, 14651), (2093, 9604), (2254, 8918), (2401, 8372), (2548, 7889), (4186, 4802), (4459, 4508)]