40128880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1471}}^1$

素因数の和:1526

約数の個数: 80

約数和(自身を含む): 105136128

約数和(自身を除く): 65007248

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 880, 1240, 1364, 1471, 1705, 2480, 2728, 2942, 3410, 5456, 5884, 6820, 7355, 11768, 13640, 14710, 16181, 23536, 27280, 29420, 32362, 45601, 58840, 64724, 80905, 91202, 117680, 129448, 161810, 182404, 228005, 258896, 323620, 364808, 456010, 501611, 647240, 729616, 912020, 1003222, 1294480, 1824040, 2006444, 2508055, 3648080, 4012888, 5016110, 8025776, 10032220, 20064440, 40128880]

約数ペア:

[(1, 40128880), (2, 20064440), (4, 10032220), (5, 8025776), (8, 5016110), (10, 4012888), (11, 3648080), (16, 2508055), (20, 2006444), (22, 1824040), (31, 1294480), (40, 1003222), (44, 912020), (55, 729616), (62, 647240), (80, 501611), (88, 456010), (110, 364808), (124, 323620), (155, 258896), (176, 228005), (220, 182404), (248, 161810), (310, 129448), (341, 117680), (440, 91202), (496, 80905), (620, 64724), (682, 58840), (880, 45601), (1240, 32362), (1364, 29420), (1471, 27280), (1705, 23536), (2480, 16181), (2728, 14710), (2942, 13640), (3410, 11768), (5456, 7355), (5884, 6820)]