31687020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{439}}^1$

素因数の和:855

約数の個数: 72

約数和(自身を含む): 96576480

約数和(自身を除く): 64889460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 401, 439, 802, 878, 1203, 1317, 1604, 1756, 2005, 2195, 2406, 2634, 3609, 3951, 4010, 4390, 4812, 5268, 6015, 6585, 7218, 7902, 8020, 8780, 12030, 13170, 14436, 15804, 18045, 19755, 24060, 26340, 36090, 39510, 72180, 79020, 176039, 352078, 528117, 704156, 880195, 1056234, 1584351, 1760390, 2112468, 2640585, 3168702, 3520780, 5281170, 6337404, 7921755, 10562340, 15843510, 31687020]

約数ペア:

[(1, 31687020), (2, 15843510), (3, 10562340), (4, 7921755), (5, 6337404), (6, 5281170), (9, 3520780), (10, 3168702), (12, 2640585), (15, 2112468), (18, 1760390), (20, 1584351), (30, 1056234), (36, 880195), (45, 704156), (60, 528117), (90, 352078), (180, 176039), (401, 79020), (439, 72180), (802, 39510), (878, 36090), (1203, 26340), (1317, 24060), (1604, 19755), (1756, 18045), (2005, 15804), (2195, 14436), (2406, 13170), (2634, 12030), (3609, 8780), (3951, 8020), (4010, 7902), (4390, 7218), (4812, 6585), (5268, 6015)]