21376472

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 44117640

約数和(自身を除く): 22741168

約数列:

[1, 2, 4, 8, 13, 26, 52, 97, 104, 163, 169, 194, 326, 338, 388, 652, 676, 776, 1261, 1304, 1352, 2119, 2522, 4238, 5044, 8476, 10088, 15811, 16393, 16952, 27547, 31622, 32786, 55094, 63244, 65572, 110188, 126488, 131144, 205543, 220376, 411086, 822172, 1644344, 2672059, 5344118, 10688236, 21376472]

約数ペア:

[(1, 21376472), (2, 10688236), (4, 5344118), (8, 2672059), (13, 1644344), (26, 822172), (52, 411086), (97, 220376), (104, 205543), (163, 131144), (169, 126488), (194, 110188), (326, 65572), (338, 63244), (388, 55094), (652, 32786), (676, 31622), (776, 27547), (1261, 16952), (1304, 16393), (1352, 15811), (2119, 10088), (2522, 8476), (4238, 5044)]