20438490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1559}}^1$

素因数の和:1611

約数の個数: 64

約数和(自身を含む): 53913600

約数和(自身を除く): 33475110

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 23, 30, 38, 46, 57, 69, 95, 114, 115, 138, 190, 230, 285, 345, 437, 570, 690, 874, 1311, 1559, 2185, 2622, 3118, 4370, 4677, 6555, 7795, 9354, 13110, 15590, 23385, 29621, 35857, 46770, 59242, 71714, 88863, 107571, 148105, 177726, 179285, 215142, 296210, 358570, 444315, 537855, 681283, 888630, 1075710, 1362566, 2043849, 3406415, 4087698, 6812830, 10219245, 20438490]

約数ペア:

[(1, 20438490), (2, 10219245), (3, 6812830), (5, 4087698), (6, 3406415), (10, 2043849), (15, 1362566), (19, 1075710), (23, 888630), (30, 681283), (38, 537855), (46, 444315), (57, 358570), (69, 296210), (95, 215142), (114, 179285), (115, 177726), (138, 148105), (190, 107571), (230, 88863), (285, 71714), (345, 59242), (437, 46770), (570, 35857), (690, 29621), (874, 23385), (1311, 15590), (1559, 13110), (2185, 9354), (2622, 7795), (3118, 6555), (4370, 4677)]