21340172

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 45299520

約数和(自身を除く): 23959348

約数列:

[1, 2, 4, 7, 14, 28, 29, 41, 58, 82, 116, 164, 203, 287, 406, 574, 641, 812, 1148, 1189, 1282, 2378, 2564, 4487, 4756, 8323, 8974, 16646, 17948, 18589, 26281, 33292, 37178, 52562, 74356, 105124, 130123, 183967, 260246, 367934, 520492, 735868, 762149, 1524298, 3048596, 5335043, 10670086, 21340172]

約数ペア:

[(1, 21340172), (2, 10670086), (4, 5335043), (7, 3048596), (14, 1524298), (28, 762149), (29, 735868), (41, 520492), (58, 367934), (82, 260246), (116, 183967), (164, 130123), (203, 105124), (287, 74356), (406, 52562), (574, 37178), (641, 33292), (812, 26281), (1148, 18589), (1189, 17948), (1282, 16646), (2378, 8974), (2564, 8323), (4487, 4756)]