2001220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 4656960

約数和(自身を除く): 2655740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 179, 215, 260, 358, 430, 559, 716, 860, 895, 1118, 1790, 2236, 2327, 2795, 3580, 4654, 5590, 7697, 9308, 11180, 11635, 15394, 23270, 30788, 38485, 46540, 76970, 100061, 153940, 200122, 400244, 500305, 1000610, 2001220]

約数ペア:

[(1, 2001220), (2, 1000610), (4, 500305), (5, 400244), (10, 200122), (13, 153940), (20, 100061), (26, 76970), (43, 46540), (52, 38485), (65, 30788), (86, 23270), (130, 15394), (172, 11635), (179, 11180), (215, 9308), (260, 7697), (358, 5590), (430, 4654), (559, 3580), (716, 2795), (860, 2327), (895, 2236), (1118, 1790)]