90421520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2647}}^1$

素因数の和:2728

約数の個数: 80

約数和(自身を含む): 244293888

約数和(自身を除く): 153872368

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 854, 976, 1220, 1708, 2135, 2440, 2647, 3416, 4270, 4880, 5294, 6832, 8540, 10588, 13235, 17080, 18529, 21176, 26470, 34160, 37058, 42352, 52940, 74116, 92645, 105880, 148232, 161467, 185290, 211760, 296464, 322934, 370580, 645868, 741160, 807335, 1130269, 1291736, 1482320, 1614670, 2260538, 2583472, 3229340, 4521076, 5651345, 6458680, 9042152, 11302690, 12917360, 18084304, 22605380, 45210760, 90421520]

約数ペア:

[(1, 90421520), (2, 45210760), (4, 22605380), (5, 18084304), (7, 12917360), (8, 11302690), (10, 9042152), (14, 6458680), (16, 5651345), (20, 4521076), (28, 3229340), (35, 2583472), (40, 2260538), (56, 1614670), (61, 1482320), (70, 1291736), (80, 1130269), (112, 807335), (122, 741160), (140, 645868), (244, 370580), (280, 322934), (305, 296464), (427, 211760), (488, 185290), (560, 161467), (610, 148232), (854, 105880), (976, 92645), (1220, 74116), (1708, 52940), (2135, 42352), (2440, 37058), (2647, 34160), (3416, 26470), (4270, 21176), (4880, 18529), (5294, 17080), (6832, 13235), (8540, 10588)]