21197652

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{617}}^1$

素因数の和:1040

約数の個数: 48

約数和(自身を含む): 56757120

約数和(自身を除く): 35559468

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 409, 617, 818, 1227, 1234, 1636, 1851, 2454, 2468, 2863, 3702, 4319, 4908, 5726, 7404, 8589, 8638, 11452, 12957, 17178, 17276, 25914, 34356, 51828, 252353, 504706, 757059, 1009412, 1514118, 1766471, 3028236, 3532942, 5299413, 7065884, 10598826, 21197652]

約数ペア:

[(1, 21197652), (2, 10598826), (3, 7065884), (4, 5299413), (6, 3532942), (7, 3028236), (12, 1766471), (14, 1514118), (21, 1009412), (28, 757059), (42, 504706), (84, 252353), (409, 51828), (617, 34356), (818, 25914), (1227, 17276), (1234, 17178), (1636, 12957), (1851, 11452), (2454, 8638), (2468, 8589), (2863, 7404), (3702, 5726), (4319, 4908)]