15972440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1171}}^1$

素因数の和:1224

約数の個数: 64

約数和(自身を含む): 40504320

約数和(自身を除く): 24531880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1171, 1240, 1364, 1705, 2342, 2728, 3410, 4684, 5855, 6820, 9368, 11710, 12881, 13640, 23420, 25762, 36301, 46840, 51524, 64405, 72602, 103048, 128810, 145204, 181505, 257620, 290408, 363010, 399311, 515240, 726020, 798622, 1452040, 1597244, 1996555, 3194488, 3993110, 7986220, 15972440]

約数ペア:

[(1, 15972440), (2, 7986220), (4, 3993110), (5, 3194488), (8, 1996555), (10, 1597244), (11, 1452040), (20, 798622), (22, 726020), (31, 515240), (40, 399311), (44, 363010), (55, 290408), (62, 257620), (88, 181505), (110, 145204), (124, 128810), (155, 103048), (220, 72602), (248, 64405), (310, 51524), (341, 46840), (440, 36301), (620, 25762), (682, 23420), (1171, 13640), (1240, 12881), (1364, 11710), (1705, 9368), (2342, 6820), (2728, 5855), (3410, 4684)]