21198968

素因数分解:

$2^3\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1319}}^1$

素因数の和:1380

約数の個数: 48

約数和(自身を含む): 47401200

約数和(自身を除く): 26202232

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 49, 56, 82, 98, 164, 196, 287, 328, 392, 574, 1148, 1319, 2009, 2296, 2638, 4018, 5276, 8036, 9233, 10552, 16072, 18466, 36932, 54079, 64631, 73864, 108158, 129262, 216316, 258524, 378553, 432632, 517048, 757106, 1514212, 2649871, 3028424, 5299742, 10599484, 21198968]

約数ペア:

[(1, 21198968), (2, 10599484), (4, 5299742), (7, 3028424), (8, 2649871), (14, 1514212), (28, 757106), (41, 517048), (49, 432632), (56, 378553), (82, 258524), (98, 216316), (164, 129262), (196, 108158), (287, 73864), (328, 64631), (392, 54079), (574, 36932), (1148, 18466), (1319, 16072), (2009, 10552), (2296, 9233), (2638, 8036), (4018, 5276)]