20434960

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:441

約数の個数: 120

約数和(自身を含む): 59668056

約数和(自身を除く): 39233096

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 245, 260, 280, 364, 392, 401, 455, 490, 520, 560, 637, 728, 784, 802, 910, 980, 1040, 1274, 1456, 1604, 1820, 1960, 2005, 2548, 2807, 3185, 3208, 3640, 3920, 4010, 5096, 5213, 5614, 6370, 6416, 7280, 8020, 10192, 10426, 11228, 12740, 14035, 16040, 19649, 20852, 22456, 25480, 26065, 28070, 32080, 36491, 39298, 41704, 44912, 50960, 52130, 56140, 72982, 78596, 83408, 98245, 104260, 112280, 145964, 157192, 182455, 196490, 208520, 224560, 255437, 291928, 314384, 364910, 392980, 417040, 510874, 583856, 729820, 785960, 1021748, 1277185, 1459640, 1571920, 2043496, 2554370, 2919280, 4086992, 5108740, 10217480, 20434960]

約数ペア:

[(1, 20434960), (2, 10217480), (4, 5108740), (5, 4086992), (7, 2919280), (8, 2554370), (10, 2043496), (13, 1571920), (14, 1459640), (16, 1277185), (20, 1021748), (26, 785960), (28, 729820), (35, 583856), (40, 510874), (49, 417040), (52, 392980), (56, 364910), (65, 314384), (70, 291928), (80, 255437), (91, 224560), (98, 208520), (104, 196490), (112, 182455), (130, 157192), (140, 145964), (182, 112280), (196, 104260), (208, 98245), (245, 83408), (260, 78596), (280, 72982), (364, 56140), (392, 52130), (401, 50960), (455, 44912), (490, 41704), (520, 39298), (560, 36491), (637, 32080), (728, 28070), (784, 26065), (802, 25480), (910, 22456), (980, 20852), (1040, 19649), (1274, 16040), (1456, 14035), (1604, 12740), (1820, 11228), (1960, 10426), (2005, 10192), (2548, 8020), (2807, 7280), (3185, 6416), (3208, 6370), (3640, 5614), (3920, 5213), (4010, 5096)]