18460720

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:242

約数の個数: 80

約数和(自身を含む): 45711360

約数和(自身を除く): 27250640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 79, 80, 92, 115, 127, 158, 184, 230, 254, 316, 368, 395, 460, 508, 632, 635, 790, 920, 1016, 1264, 1270, 1580, 1817, 1840, 2032, 2540, 2921, 3160, 3634, 5080, 5842, 6320, 7268, 9085, 10033, 10160, 11684, 14536, 14605, 18170, 20066, 23368, 29072, 29210, 36340, 40132, 46736, 50165, 58420, 72680, 80264, 100330, 116840, 145360, 160528, 200660, 230759, 233680, 401320, 461518, 802640, 923036, 1153795, 1846072, 2307590, 3692144, 4615180, 9230360, 18460720]

約数ペア:

[(1, 18460720), (2, 9230360), (4, 4615180), (5, 3692144), (8, 2307590), (10, 1846072), (16, 1153795), (20, 923036), (23, 802640), (40, 461518), (46, 401320), (79, 233680), (80, 230759), (92, 200660), (115, 160528), (127, 145360), (158, 116840), (184, 100330), (230, 80264), (254, 72680), (316, 58420), (368, 50165), (395, 46736), (460, 40132), (508, 36340), (632, 29210), (635, 29072), (790, 23368), (920, 20066), (1016, 18170), (1264, 14605), (1270, 14536), (1580, 11684), (1817, 10160), (1840, 10033), (2032, 9085), (2540, 7268), (2921, 6320), (3160, 5842), (3634, 5080)]