21397425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{769}}^1$

素因数の和:842

約数の個数: 48

約数和(自身を含む): 41247360

約数和(自身を除く): 19849935

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 53, 75, 105, 159, 175, 265, 371, 525, 769, 795, 1113, 1325, 1855, 2307, 3845, 3975, 5383, 5565, 9275, 11535, 16149, 19225, 26915, 27825, 40757, 57675, 80745, 122271, 134575, 203785, 285299, 403725, 611355, 855897, 1018925, 1426495, 3056775, 4279485, 7132475, 21397425]

約数ペア:

[(1, 21397425), (3, 7132475), (5, 4279485), (7, 3056775), (15, 1426495), (21, 1018925), (25, 855897), (35, 611355), (53, 403725), (75, 285299), (105, 203785), (159, 134575), (175, 122271), (265, 80745), (371, 57675), (525, 40757), (769, 27825), (795, 26915), (1113, 19225), (1325, 16149), (1855, 11535), (2307, 9275), (3845, 5565), (3975, 5383)]