691268560

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{229}}^1\times {\mathrm{389}}^1$

素因数の和:728

約数の個数: 80

約数和(自身を含む): 1635051600

約数和(自身を除く): 943783040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 229, 388, 389, 458, 485, 776, 778, 916, 970, 1145, 1552, 1556, 1832, 1940, 1945, 2290, 3112, 3664, 3880, 3890, 4580, 6224, 7760, 7780, 9160, 15560, 18320, 22213, 31120, 37733, 44426, 75466, 88852, 89081, 111065, 150932, 177704, 178162, 188665, 222130, 301864, 355408, 356324, 377330, 444260, 445405, 603728, 712648, 754660, 888520, 890810, 1425296, 1509320, 1777040, 1781620, 3018640, 3563240, 7126480, 8640857, 17281714, 34563428, 43204285, 69126856, 86408570, 138253712, 172817140, 345634280, 691268560]

約数ペア:

[(1, 691268560), (2, 345634280), (4, 172817140), (5, 138253712), (8, 86408570), (10, 69126856), (16, 43204285), (20, 34563428), (40, 17281714), (80, 8640857), (97, 7126480), (194, 3563240), (229, 3018640), (388, 1781620), (389, 1777040), (458, 1509320), (485, 1425296), (776, 890810), (778, 888520), (916, 754660), (970, 712648), (1145, 603728), (1552, 445405), (1556, 444260), (1832, 377330), (1940, 356324), (1945, 355408), (2290, 301864), (3112, 222130), (3664, 188665), (3880, 178162), (3890, 177704), (4580, 150932), (6224, 111065), (7760, 89081), (7780, 88852), (9160, 75466), (15560, 44426), (18320, 37733), (22213, 31120)]