260249640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{631}}^1$

素因数の和:1143

約数の個数: 128

約数和(自身を含む): 895518720

約数和(自身を除く): 635269080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 491, 631, 840, 982, 1262, 1473, 1893, 1964, 2455, 2524, 2946, 3155, 3437, 3786, 3928, 4417, 4910, 5048, 5892, 6310, 6874, 7365, 7572, 8834, 9465, 9820, 10311, 11784, 12620, 13251, 13748, 14730, 15144, 17185, 17668, 18930, 19640, 20622, 22085, 25240, 26502, 27496, 29460, 34370, 35336, 37860, 41244, 44170, 51555, 53004, 58920, 66255, 68740, 75720, 82488, 88340, 103110, 106008, 132510, 137480, 176680, 206220, 265020, 309821, 412440, 530040, 619642, 929463, 1239284, 1549105, 1858926, 2168747, 2478568, 3098210, 3717852, 4337494, 4647315, 6196420, 6506241, 7435704, 8674988, 9294630, 10843735, 12392840, 13012482, 17349976, 18589260, 21687470, 26024964, 32531205, 37178520, 43374940, 52049928, 65062410, 86749880, 130124820, 260249640]

約数ペア:

[(1, 260249640), (2, 130124820), (3, 86749880), (4, 65062410), (5, 52049928), (6, 43374940), (7, 37178520), (8, 32531205), (10, 26024964), (12, 21687470), (14, 18589260), (15, 17349976), (20, 13012482), (21, 12392840), (24, 10843735), (28, 9294630), (30, 8674988), (35, 7435704), (40, 6506241), (42, 6196420), (56, 4647315), (60, 4337494), (70, 3717852), (84, 3098210), (105, 2478568), (120, 2168747), (140, 1858926), (168, 1549105), (210, 1239284), (280, 929463), (420, 619642), (491, 530040), (631, 412440), (840, 309821), (982, 265020), (1262, 206220), (1473, 176680), (1893, 137480), (1964, 132510), (2455, 106008), (2524, 103110), (2946, 88340), (3155, 82488), (3437, 75720), (3786, 68740), (3928, 66255), (4417, 58920), (4910, 53004), (5048, 51555), (5892, 44170), (6310, 41244), (6874, 37860), (7365, 35336), (7572, 34370), (8834, 29460), (9465, 27496), (9820, 26502), (10311, 25240), (11784, 22085), (12620, 20622), (13251, 19640), (13748, 18930), (14730, 17668), (15144, 17185)]