21916328

素因数分解:

$2^3\times 7^5\times {\mathrm{163}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 48235680

約数和(自身を除く): 26319352

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 163, 196, 326, 343, 392, 652, 686, 1141, 1304, 1372, 2282, 2401, 2744, 4564, 4802, 7987, 9128, 9604, 15974, 16807, 19208, 31948, 33614, 55909, 63896, 67228, 111818, 134456, 223636, 391363, 447272, 782726, 1565452, 2739541, 3130904, 5479082, 10958164, 21916328]

約数ペア:

[(1, 21916328), (2, 10958164), (4, 5479082), (7, 3130904), (8, 2739541), (14, 1565452), (28, 782726), (49, 447272), (56, 391363), (98, 223636), (163, 134456), (196, 111818), (326, 67228), (343, 63896), (392, 55909), (652, 33614), (686, 31948), (1141, 19208), (1304, 16807), (1372, 15974), (2282, 9604), (2401, 9128), (2744, 7987), (4564, 4802)]