16911640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 40176000

約数和(自身を除く): 23264360

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 61, 116, 122, 145, 232, 239, 244, 290, 305, 478, 488, 580, 610, 956, 1160, 1195, 1220, 1769, 1912, 2390, 2440, 3538, 4780, 6931, 7076, 8845, 9560, 13862, 14152, 14579, 17690, 27724, 29158, 34655, 35380, 55448, 58316, 69310, 70760, 72895, 116632, 138620, 145790, 277240, 291580, 422791, 583160, 845582, 1691164, 2113955, 3382328, 4227910, 8455820, 16911640]

約数ペア:

[(1, 16911640), (2, 8455820), (4, 4227910), (5, 3382328), (8, 2113955), (10, 1691164), (20, 845582), (29, 583160), (40, 422791), (58, 291580), (61, 277240), (116, 145790), (122, 138620), (145, 116632), (232, 72895), (239, 70760), (244, 69310), (290, 58316), (305, 55448), (478, 35380), (488, 34655), (580, 29158), (610, 27724), (956, 17690), (1160, 14579), (1195, 14152), (1220, 13862), (1769, 9560), (1912, 8845), (2390, 7076), (2440, 6931), (3538, 4780)]