261531972

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{558829}}^1$

素因数の和:558852

約数の個数: 36

約数和(自身を含む): 711949420

約数和(自身を除く): 450417448

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 558829, 1117658, 1676487, 2235316, 3352974, 5029461, 6705948, 7264777, 10058922, 14529554, 20117844, 21794331, 29059108, 43588662, 65382993, 87177324, 130765986, 261531972]

約数ペア:

[(1, 261531972), (2, 130765986), (3, 87177324), (4, 65382993), (6, 43588662), (9, 29059108), (12, 21794331), (13, 20117844), (18, 14529554), (26, 10058922), (36, 7264777), (39, 6705948), (52, 5029461), (78, 3352974), (117, 2235316), (156, 1676487), (234, 1117658), (468, 558829)]