21997962

素因数分解:

$2^1\times 3^2\times 7^4\times {\mathrm{509}}^1$

素因数の和:545

約数の個数: 60

約数和(自身を含む): 55711890

約数和(自身を除く): 33713928

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 294, 343, 441, 509, 686, 882, 1018, 1029, 1527, 2058, 2401, 3054, 3087, 3563, 4581, 4802, 6174, 7126, 7203, 9162, 10689, 14406, 21378, 21609, 24941, 32067, 43218, 49882, 64134, 74823, 149646, 174587, 224469, 349174, 448938, 523761, 1047522, 1222109, 1571283, 2444218, 3142566, 3666327, 7332654, 10998981, 21997962]

約数ペア:

[(1, 21997962), (2, 10998981), (3, 7332654), (6, 3666327), (7, 3142566), (9, 2444218), (14, 1571283), (18, 1222109), (21, 1047522), (42, 523761), (49, 448938), (63, 349174), (98, 224469), (126, 174587), (147, 149646), (294, 74823), (343, 64134), (441, 49882), (509, 43218), (686, 32067), (882, 24941), (1018, 21609), (1029, 21378), (1527, 14406), (2058, 10689), (2401, 9162), (3054, 7203), (3087, 7126), (3563, 6174), (4581, 4802)]