20874060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1303}}^1$

素因数の和:1407

約数の個数: 72

約数和(自身を含む): 64078560

約数和(自身を除く): 43204500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 89, 90, 178, 180, 267, 356, 445, 534, 801, 890, 1068, 1303, 1335, 1602, 1780, 2606, 2670, 3204, 3909, 4005, 5212, 5340, 6515, 7818, 8010, 11727, 13030, 15636, 16020, 19545, 23454, 26060, 39090, 46908, 58635, 78180, 115967, 117270, 231934, 234540, 347901, 463868, 579835, 695802, 1043703, 1159670, 1391604, 1739505, 2087406, 2319340, 3479010, 4174812, 5218515, 6958020, 10437030, 20874060]

約数ペア:

[(1, 20874060), (2, 10437030), (3, 6958020), (4, 5218515), (5, 4174812), (6, 3479010), (9, 2319340), (10, 2087406), (12, 1739505), (15, 1391604), (18, 1159670), (20, 1043703), (30, 695802), (36, 579835), (45, 463868), (60, 347901), (89, 234540), (90, 231934), (178, 117270), (180, 115967), (267, 78180), (356, 58635), (445, 46908), (534, 39090), (801, 26060), (890, 23454), (1068, 19545), (1303, 16020), (1335, 15636), (1602, 13030), (1780, 11727), (2606, 8010), (2670, 7818), (3204, 6515), (3909, 5340), (4005, 5212)]