18793580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{43}}^1$

素因数の和:147

約数の個数: 72

約数和(自身を含む): 44577456

約数和(自身を除く): 25783876

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 43, 52, 65, 82, 86, 130, 164, 172, 205, 215, 260, 410, 430, 533, 559, 820, 860, 1066, 1118, 1681, 1763, 2132, 2236, 2665, 2795, 3362, 3526, 5330, 5590, 6724, 7052, 8405, 8815, 10660, 11180, 16810, 17630, 21853, 22919, 33620, 35260, 43706, 45838, 72283, 87412, 91676, 109265, 114595, 144566, 218530, 229190, 289132, 361415, 437060, 458380, 722830, 939679, 1445660, 1879358, 3758716, 4698395, 9396790, 18793580]

約数ペア:

[(1, 18793580), (2, 9396790), (4, 4698395), (5, 3758716), (10, 1879358), (13, 1445660), (20, 939679), (26, 722830), (41, 458380), (43, 437060), (52, 361415), (65, 289132), (82, 229190), (86, 218530), (130, 144566), (164, 114595), (172, 109265), (205, 91676), (215, 87412), (260, 72283), (410, 45838), (430, 43706), (533, 35260), (559, 33620), (820, 22919), (860, 21853), (1066, 17630), (1118, 16810), (1681, 11180), (1763, 10660), (2132, 8815), (2236, 8405), (2665, 7052), (2795, 6724), (3362, 5590), (3526, 5330)]