28661080

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{2089}}^1$

素因数の和:2121

約数の個数: 64

約数和(自身を含む): 75240000

約数和(自身を除く): 46578920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1715, 1960, 2089, 2744, 3430, 4178, 6860, 8356, 10445, 13720, 14623, 16712, 20890, 29246, 41780, 58492, 73115, 83560, 102361, 116984, 146230, 204722, 292460, 409444, 511805, 584920, 716527, 818888, 1023610, 1433054, 2047220, 2866108, 3582635, 4094440, 5732216, 7165270, 14330540, 28661080]

約数ペア:

[(1, 28661080), (2, 14330540), (4, 7165270), (5, 5732216), (7, 4094440), (8, 3582635), (10, 2866108), (14, 2047220), (20, 1433054), (28, 1023610), (35, 818888), (40, 716527), (49, 584920), (56, 511805), (70, 409444), (98, 292460), (140, 204722), (196, 146230), (245, 116984), (280, 102361), (343, 83560), (392, 73115), (490, 58492), (686, 41780), (980, 29246), (1372, 20890), (1715, 16712), (1960, 14623), (2089, 13720), (2744, 10445), (3430, 8356), (4178, 6860)]