19981830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{401}}^1$

素因数の和:573

約数の個数: 64

約数和(自身を含む): 52793856

約数和(自身を除く): 32812026

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 151, 165, 302, 330, 401, 453, 755, 802, 906, 1203, 1510, 1661, 2005, 2265, 2406, 3322, 4010, 4411, 4530, 4983, 6015, 8305, 8822, 9966, 12030, 13233, 16610, 22055, 24915, 26466, 44110, 49830, 60551, 66165, 121102, 132330, 181653, 302755, 363306, 605510, 666061, 908265, 1332122, 1816530, 1998183, 3330305, 3996366, 6660610, 9990915, 19981830]

約数ペア:

[(1, 19981830), (2, 9990915), (3, 6660610), (5, 3996366), (6, 3330305), (10, 1998183), (11, 1816530), (15, 1332122), (22, 908265), (30, 666061), (33, 605510), (55, 363306), (66, 302755), (110, 181653), (151, 132330), (165, 121102), (302, 66165), (330, 60551), (401, 49830), (453, 44110), (755, 26466), (802, 24915), (906, 22055), (1203, 16610), (1510, 13233), (1661, 12030), (2005, 9966), (2265, 8822), (2406, 8305), (3322, 6015), (4010, 4983), (4411, 4530)]