20409876

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{563}}^1$

素因数の和:645

約数の個数: 72

約数和(自身を含む): 55429920

約数和(自身を除く): 35020044

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 53, 57, 76, 106, 114, 159, 171, 212, 228, 318, 342, 477, 563, 636, 684, 954, 1007, 1126, 1689, 1908, 2014, 2252, 3021, 3378, 4028, 5067, 6042, 6756, 9063, 10134, 10697, 12084, 18126, 20268, 21394, 29839, 32091, 36252, 42788, 59678, 64182, 89517, 96273, 119356, 128364, 179034, 192546, 268551, 358068, 385092, 537102, 566941, 1074204, 1133882, 1700823, 2267764, 3401646, 5102469, 6803292, 10204938, 20409876]

約数ペア:

[(1, 20409876), (2, 10204938), (3, 6803292), (4, 5102469), (6, 3401646), (9, 2267764), (12, 1700823), (18, 1133882), (19, 1074204), (36, 566941), (38, 537102), (53, 385092), (57, 358068), (76, 268551), (106, 192546), (114, 179034), (159, 128364), (171, 119356), (212, 96273), (228, 89517), (318, 64182), (342, 59678), (477, 42788), (563, 36252), (636, 32091), (684, 29839), (954, 21394), (1007, 20268), (1126, 18126), (1689, 12084), (1908, 10697), (2014, 10134), (2252, 9063), (3021, 6756), (3378, 6042), (4028, 5067)]