21707630

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:273

約数の個数: 64

約数和(自身を含む): 47416320

約数和(自身を除く): 25708690

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 97, 115, 139, 161, 194, 230, 278, 322, 485, 679, 695, 805, 970, 973, 1358, 1390, 1610, 1946, 2231, 3197, 3395, 4462, 4865, 6394, 6790, 9730, 11155, 13483, 15617, 15985, 22310, 22379, 26966, 31234, 31970, 44758, 67415, 78085, 94381, 111895, 134830, 156170, 188762, 223790, 310109, 471905, 620218, 943810, 1550545, 2170763, 3101090, 4341526, 10853815, 21707630]

約数ペア:

[(1, 21707630), (2, 10853815), (5, 4341526), (7, 3101090), (10, 2170763), (14, 1550545), (23, 943810), (35, 620218), (46, 471905), (70, 310109), (97, 223790), (115, 188762), (139, 156170), (161, 134830), (194, 111895), (230, 94381), (278, 78085), (322, 67415), (485, 44758), (679, 31970), (695, 31234), (805, 26966), (970, 22379), (973, 22310), (1358, 15985), (1390, 15617), (1610, 13483), (1946, 11155), (2231, 9730), (3197, 6790), (3395, 6394), (4462, 4865)]