51132280

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:424

約数の個数: 64

約数和(自身を含む): 118972800

約数和(自身を除く): 67840520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 89, 106, 178, 212, 265, 271, 356, 424, 445, 530, 542, 712, 890, 1060, 1084, 1355, 1780, 2120, 2168, 2710, 3560, 4717, 5420, 9434, 10840, 14363, 18868, 23585, 24119, 28726, 37736, 47170, 48238, 57452, 71815, 94340, 96476, 114904, 120595, 143630, 188680, 192952, 241190, 287260, 482380, 574520, 964760, 1278307, 2556614, 5113228, 6391535, 10226456, 12783070, 25566140, 51132280]

約数ペア:

[(1, 51132280), (2, 25566140), (4, 12783070), (5, 10226456), (8, 6391535), (10, 5113228), (20, 2556614), (40, 1278307), (53, 964760), (89, 574520), (106, 482380), (178, 287260), (212, 241190), (265, 192952), (271, 188680), (356, 143630), (424, 120595), (445, 114904), (530, 96476), (542, 94340), (712, 71815), (890, 57452), (1060, 48238), (1084, 47170), (1355, 37736), (1780, 28726), (2120, 24119), (2168, 23585), (2710, 18868), (3560, 14363), (4717, 10840), (5420, 9434)]