19836740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1171}}^1$

素因数の和:1209

約数の個数: 72

約数和(自身を含む): 52374336

約数和(自身を除く): 32537596

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1171, 1210, 1540, 1694, 2342, 2420, 3388, 4235, 4684, 5855, 8197, 8470, 11710, 12881, 16394, 16940, 23420, 25762, 32788, 40985, 51524, 64405, 81970, 90167, 128810, 141691, 163940, 180334, 257620, 283382, 360668, 450835, 566764, 708455, 901670, 991837, 1416910, 1803340, 1983674, 2833820, 3967348, 4959185, 9918370, 19836740]

約数ペア:

[(1, 19836740), (2, 9918370), (4, 4959185), (5, 3967348), (7, 2833820), (10, 1983674), (11, 1803340), (14, 1416910), (20, 991837), (22, 901670), (28, 708455), (35, 566764), (44, 450835), (55, 360668), (70, 283382), (77, 257620), (110, 180334), (121, 163940), (140, 141691), (154, 128810), (220, 90167), (242, 81970), (308, 64405), (385, 51524), (484, 40985), (605, 32788), (770, 25762), (847, 23420), (1171, 16940), (1210, 16394), (1540, 12881), (1694, 11710), (2342, 8470), (2420, 8197), (3388, 5855), (4235, 4684)]