18303640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 25760360

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 31, 40, 58, 62, 116, 124, 145, 155, 232, 248, 290, 310, 509, 580, 620, 899, 1018, 1160, 1240, 1798, 2036, 2545, 3596, 4072, 4495, 5090, 7192, 8990, 10180, 14761, 15779, 17980, 20360, 29522, 31558, 35960, 59044, 63116, 73805, 78895, 118088, 126232, 147610, 157790, 295220, 315580, 457591, 590440, 631160, 915182, 1830364, 2287955, 3660728, 4575910, 9151820, 18303640]

約数ペア:

[(1, 18303640), (2, 9151820), (4, 4575910), (5, 3660728), (8, 2287955), (10, 1830364), (20, 915182), (29, 631160), (31, 590440), (40, 457591), (58, 315580), (62, 295220), (116, 157790), (124, 147610), (145, 126232), (155, 118088), (232, 78895), (248, 73805), (290, 63116), (310, 59044), (509, 35960), (580, 31558), (620, 29522), (899, 20360), (1018, 17980), (1160, 15779), (1240, 14761), (1798, 10180), (2036, 8990), (2545, 7192), (3596, 5090), (4072, 4495)]