20993220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{523}}^1$

素因数の和:761

約数の個数: 72

約数和(自身を含む): 64087296

約数和(自身を除く): 43094076

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 223, 446, 523, 669, 892, 1046, 1115, 1338, 1569, 2007, 2092, 2230, 2615, 2676, 3138, 3345, 4014, 4460, 4707, 5230, 6276, 6690, 7845, 8028, 9414, 10035, 10460, 13380, 15690, 18828, 20070, 23535, 31380, 40140, 47070, 94140, 116629, 233258, 349887, 466516, 583145, 699774, 1049661, 1166290, 1399548, 1749435, 2099322, 2332580, 3498870, 4198644, 5248305, 6997740, 10496610, 20993220]

約数ペア:

[(1, 20993220), (2, 10496610), (3, 6997740), (4, 5248305), (5, 4198644), (6, 3498870), (9, 2332580), (10, 2099322), (12, 1749435), (15, 1399548), (18, 1166290), (20, 1049661), (30, 699774), (36, 583145), (45, 466516), (60, 349887), (90, 233258), (180, 116629), (223, 94140), (446, 47070), (523, 40140), (669, 31380), (892, 23535), (1046, 20070), (1115, 18828), (1338, 15690), (1569, 13380), (2007, 10460), (2092, 10035), (2230, 9414), (2615, 8028), (2676, 7845), (3138, 6690), (3345, 6276), (4014, 5230), (4460, 4707)]