21270120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{491}}^1$

素因数の和:543

約数の個数: 96

約数和(自身を含む): 67482720

約数和(自身を除く): 46212600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 190, 228, 285, 361, 380, 456, 491, 570, 722, 760, 982, 1083, 1140, 1444, 1473, 1805, 1964, 2166, 2280, 2455, 2888, 2946, 3610, 3928, 4332, 4910, 5415, 5892, 7220, 7365, 8664, 9329, 9820, 10830, 11784, 14440, 14730, 18658, 19640, 21660, 27987, 29460, 37316, 43320, 46645, 55974, 58920, 74632, 93290, 111948, 139935, 177251, 186580, 223896, 279870, 354502, 373160, 531753, 559740, 709004, 886255, 1063506, 1119480, 1418008, 1772510, 2127012, 2658765, 3545020, 4254024, 5317530, 7090040, 10635060, 21270120]

約数ペア:

[(1, 21270120), (2, 10635060), (3, 7090040), (4, 5317530), (5, 4254024), (6, 3545020), (8, 2658765), (10, 2127012), (12, 1772510), (15, 1418008), (19, 1119480), (20, 1063506), (24, 886255), (30, 709004), (38, 559740), (40, 531753), (57, 373160), (60, 354502), (76, 279870), (95, 223896), (114, 186580), (120, 177251), (152, 139935), (190, 111948), (228, 93290), (285, 74632), (361, 58920), (380, 55974), (456, 46645), (491, 43320), (570, 37316), (722, 29460), (760, 27987), (982, 21660), (1083, 19640), (1140, 18658), (1444, 14730), (1473, 14440), (1805, 11784), (1964, 10830), (2166, 9820), (2280, 9329), (2455, 8664), (2888, 7365), (2946, 7220), (3610, 5892), (3928, 5415), (4332, 4910)]