20972238

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:713

約数の個数: 64

約数和(自身を含む): 51770880

約数和(自身を除く): 30798642

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 41, 42, 57, 82, 114, 123, 133, 246, 266, 287, 399, 574, 641, 779, 798, 861, 1282, 1558, 1722, 1923, 2337, 3846, 4487, 4674, 5453, 8974, 10906, 12179, 13461, 16359, 24358, 26281, 26922, 32718, 36537, 52562, 73074, 78843, 85253, 157686, 170506, 183967, 255759, 367934, 499339, 511518, 551901, 998678, 1103802, 1498017, 2996034, 3495373, 6990746, 10486119, 20972238]

約数ペア:

[(1, 20972238), (2, 10486119), (3, 6990746), (6, 3495373), (7, 2996034), (14, 1498017), (19, 1103802), (21, 998678), (38, 551901), (41, 511518), (42, 499339), (57, 367934), (82, 255759), (114, 183967), (123, 170506), (133, 157686), (246, 85253), (266, 78843), (287, 73074), (399, 52562), (574, 36537), (641, 32718), (779, 26922), (798, 26281), (861, 24358), (1282, 16359), (1558, 13461), (1722, 12179), (1923, 10906), (2337, 8974), (3846, 5453), (4487, 4674)]