81388920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:325

約数の個数: 128

約数和(自身を含む): 253808640

約数和(自身を除く): 172419720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 53, 60, 67, 106, 120, 134, 159, 191, 201, 212, 265, 268, 318, 335, 382, 402, 424, 530, 536, 573, 636, 670, 764, 795, 804, 955, 1005, 1060, 1146, 1272, 1340, 1528, 1590, 1608, 1910, 2010, 2120, 2292, 2680, 2865, 3180, 3551, 3820, 4020, 4584, 5730, 6360, 7102, 7640, 8040, 10123, 10653, 11460, 12797, 14204, 17755, 20246, 21306, 22920, 25594, 28408, 30369, 35510, 38391, 40492, 42612, 50615, 51188, 53265, 60738, 63985, 71020, 76782, 80984, 85224, 101230, 102376, 106530, 121476, 127970, 142040, 151845, 153564, 191955, 202460, 213060, 242952, 255940, 303690, 307128, 383910, 404920, 426120, 511880, 607380, 678241, 767820, 1214760, 1356482, 1535640, 2034723, 2712964, 3391205, 4069446, 5425928, 6782410, 8138892, 10173615, 13564820, 16277784, 20347230, 27129640, 40694460, 81388920]

約数ペア:

[(1, 81388920), (2, 40694460), (3, 27129640), (4, 20347230), (5, 16277784), (6, 13564820), (8, 10173615), (10, 8138892), (12, 6782410), (15, 5425928), (20, 4069446), (24, 3391205), (30, 2712964), (40, 2034723), (53, 1535640), (60, 1356482), (67, 1214760), (106, 767820), (120, 678241), (134, 607380), (159, 511880), (191, 426120), (201, 404920), (212, 383910), (265, 307128), (268, 303690), (318, 255940), (335, 242952), (382, 213060), (402, 202460), (424, 191955), (530, 153564), (536, 151845), (573, 142040), (636, 127970), (670, 121476), (764, 106530), (795, 102376), (804, 101230), (955, 85224), (1005, 80984), (1060, 76782), (1146, 71020), (1272, 63985), (1340, 60738), (1528, 53265), (1590, 51188), (1608, 50615), (1910, 42612), (2010, 40492), (2120, 38391), (2292, 35510), (2680, 30369), (2865, 28408), (3180, 25594), (3551, 22920), (3820, 21306), (4020, 20246), (4584, 17755), (5730, 14204), (6360, 12797), (7102, 11460), (7640, 10653), (8040, 10123)]