81308040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1987}}^1$

素因数の和:2043

約数の個数: 128

約数和(自身を含む): 274821120

約数和(自身を除く): 193513080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 31, 33, 40, 44, 55, 60, 62, 66, 88, 93, 110, 120, 124, 132, 155, 165, 186, 220, 248, 264, 310, 330, 341, 372, 440, 465, 620, 660, 682, 744, 930, 1023, 1240, 1320, 1364, 1705, 1860, 1987, 2046, 2728, 3410, 3720, 3974, 4092, 5115, 5961, 6820, 7948, 8184, 9935, 10230, 11922, 13640, 15896, 19870, 20460, 21857, 23844, 29805, 39740, 40920, 43714, 47688, 59610, 61597, 65571, 79480, 87428, 109285, 119220, 123194, 131142, 174856, 184791, 218570, 238440, 246388, 262284, 307985, 327855, 369582, 437140, 492776, 524568, 615970, 655710, 677567, 739164, 874280, 923955, 1231940, 1311420, 1355134, 1478328, 1847910, 2032701, 2463880, 2622840, 2710268, 3387835, 3695820, 4065402, 5420536, 6775670, 7391640, 8130804, 10163505, 13551340, 16261608, 20327010, 27102680, 40654020, 81308040]

約数ペア:

[(1, 81308040), (2, 40654020), (3, 27102680), (4, 20327010), (5, 16261608), (6, 13551340), (8, 10163505), (10, 8130804), (11, 7391640), (12, 6775670), (15, 5420536), (20, 4065402), (22, 3695820), (24, 3387835), (30, 2710268), (31, 2622840), (33, 2463880), (40, 2032701), (44, 1847910), (55, 1478328), (60, 1355134), (62, 1311420), (66, 1231940), (88, 923955), (93, 874280), (110, 739164), (120, 677567), (124, 655710), (132, 615970), (155, 524568), (165, 492776), (186, 437140), (220, 369582), (248, 327855), (264, 307985), (310, 262284), (330, 246388), (341, 238440), (372, 218570), (440, 184791), (465, 174856), (620, 131142), (660, 123194), (682, 119220), (744, 109285), (930, 87428), (1023, 79480), (1240, 65571), (1320, 61597), (1364, 59610), (1705, 47688), (1860, 43714), (1987, 40920), (2046, 39740), (2728, 29805), (3410, 23844), (3720, 21857), (3974, 20460), (4092, 19870), (5115, 15896), (5961, 13640), (6820, 11922), (7948, 10230), (8184, 9935)]