18173870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:281

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 21017170

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 71, 110, 130, 142, 143, 179, 286, 355, 358, 710, 715, 781, 895, 923, 1430, 1562, 1790, 1846, 1969, 2327, 3905, 3938, 4615, 4654, 7810, 9230, 9845, 10153, 11635, 12709, 19690, 20306, 23270, 25418, 25597, 50765, 51194, 63545, 101530, 127090, 127985, 139799, 165217, 255970, 279598, 330434, 698995, 826085, 1397990, 1652170, 1817387, 3634774, 9086935, 18173870]

約数ペア:

[(1, 18173870), (2, 9086935), (5, 3634774), (10, 1817387), (11, 1652170), (13, 1397990), (22, 826085), (26, 698995), (55, 330434), (65, 279598), (71, 255970), (110, 165217), (130, 139799), (142, 127985), (143, 127090), (179, 101530), (286, 63545), (355, 51194), (358, 50765), (710, 25597), (715, 25418), (781, 23270), (895, 20306), (923, 19690), (1430, 12709), (1562, 11635), (1790, 10153), (1846, 9845), (1969, 9230), (2327, 7810), (3905, 4654), (3938, 4615)]