280189160

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:307

約数の個数: 96

約数和(自身を含む): 672419880

約数和(自身を除く): 392230720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 197, 248, 296, 310, 370, 394, 620, 740, 788, 961, 985, 1147, 1240, 1480, 1576, 1922, 1970, 2294, 3844, 3940, 4588, 4805, 5735, 6107, 7289, 7688, 7880, 9176, 9610, 11470, 12214, 14578, 19220, 22940, 24428, 29156, 30535, 35557, 36445, 38440, 45880, 48856, 58312, 61070, 71114, 72890, 122140, 142228, 145780, 177785, 189317, 225959, 244280, 284456, 291560, 355570, 378634, 451918, 711140, 757268, 903836, 946585, 1129795, 1422280, 1514536, 1807672, 1893170, 2259590, 3786340, 4519180, 7004729, 7572680, 9038360, 14009458, 28018916, 35023645, 56037832, 70047290, 140094580, 280189160]

約数ペア:

[(1, 280189160), (2, 140094580), (4, 70047290), (5, 56037832), (8, 35023645), (10, 28018916), (20, 14009458), (31, 9038360), (37, 7572680), (40, 7004729), (62, 4519180), (74, 3786340), (124, 2259590), (148, 1893170), (155, 1807672), (185, 1514536), (197, 1422280), (248, 1129795), (296, 946585), (310, 903836), (370, 757268), (394, 711140), (620, 451918), (740, 378634), (788, 355570), (961, 291560), (985, 284456), (1147, 244280), (1240, 225959), (1480, 189317), (1576, 177785), (1922, 145780), (1970, 142228), (2294, 122140), (3844, 72890), (3940, 71114), (4588, 61070), (4805, 58312), (5735, 48856), (6107, 45880), (7289, 38440), (7688, 36445), (7880, 35557), (9176, 30535), (9610, 29156), (11470, 24428), (12214, 22940), (14578, 19220)]