21309316

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 47113920

約数和(自身を除く): 25804604

約数列:

[1, 2, 4, 7, 14, 23, 28, 29, 46, 49, 58, 92, 98, 116, 161, 163, 196, 203, 322, 326, 406, 644, 652, 667, 812, 1127, 1141, 1334, 1421, 2254, 2282, 2668, 2842, 3749, 4508, 4564, 4669, 4727, 5684, 7498, 7987, 9338, 9454, 14996, 15974, 18676, 18908, 26243, 31948, 32683, 33089, 52486, 65366, 66178, 104972, 108721, 130732, 132356, 183701, 217442, 231623, 367402, 434884, 463246, 734804, 761047, 926492, 1522094, 3044188, 5327329, 10654658, 21309316]

約数ペア:

[(1, 21309316), (2, 10654658), (4, 5327329), (7, 3044188), (14, 1522094), (23, 926492), (28, 761047), (29, 734804), (46, 463246), (49, 434884), (58, 367402), (92, 231623), (98, 217442), (116, 183701), (161, 132356), (163, 130732), (196, 108721), (203, 104972), (322, 66178), (326, 65366), (406, 52486), (644, 33089), (652, 32683), (667, 31948), (812, 26243), (1127, 18908), (1141, 18676), (1334, 15974), (1421, 14996), (2254, 9454), (2282, 9338), (2668, 7987), (2842, 7498), (3749, 5684), (4508, 4727), (4564, 4669)]