20217698980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{461}}^1\times {\mathrm{881}}^1$

素因数の和:1501

約数の個数: 96

約数和(自身を含む): 45181825920

約数和(自身を除く): 24964126940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 380, 461, 524, 655, 881, 922, 1310, 1762, 1844, 2305, 2489, 2620, 3524, 4405, 4610, 4978, 8759, 8810, 9220, 9956, 12445, 16739, 17518, 17620, 24890, 33478, 35036, 43795, 49780, 60391, 66956, 83695, 87590, 115411, 120782, 167390, 175180, 230822, 241564, 301955, 334780, 406141, 461644, 577055, 603910, 812282, 1147429, 1154110, 1207820, 1624564, 2030705, 2192809, 2294858, 2308220, 4061410, 4385618, 4589716, 5737145, 7716679, 8122820, 8771236, 10964045, 11474290, 15433358, 21928090, 22948580, 30866716, 38583395, 43856180, 53204471, 77166790, 106408942, 154333580, 212817884, 266022355, 532044710, 1010884949, 1064089420, 2021769898, 4043539796, 5054424745, 10108849490, 20217698980]

約数ペア:

[(1, 20217698980), (2, 10108849490), (4, 5054424745), (5, 4043539796), (10, 2021769898), (19, 1064089420), (20, 1010884949), (38, 532044710), (76, 266022355), (95, 212817884), (131, 154333580), (190, 106408942), (262, 77166790), (380, 53204471), (461, 43856180), (524, 38583395), (655, 30866716), (881, 22948580), (922, 21928090), (1310, 15433358), (1762, 11474290), (1844, 10964045), (2305, 8771236), (2489, 8122820), (2620, 7716679), (3524, 5737145), (4405, 4589716), (4610, 4385618), (4978, 4061410), (8759, 2308220), (8810, 2294858), (9220, 2192809), (9956, 2030705), (12445, 1624564), (16739, 1207820), (17518, 1154110), (17620, 1147429), (24890, 812282), (33478, 603910), (35036, 577055), (43795, 461644), (49780, 406141), (60391, 334780), (66956, 301955), (83695, 241564), (87590, 230822), (115411, 175180), (120782, 167390)]