19661580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{5749}}^1$

素因数の和:5783

約数の個数: 72

約数和(自身を含む): 62790000

約数和(自身を除く): 43128420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 5749, 11498, 17247, 22996, 28745, 34494, 51741, 57490, 68988, 86235, 103482, 109231, 114980, 172470, 206964, 218462, 258705, 327693, 344940, 436924, 517410, 546155, 655386, 983079, 1034820, 1092310, 1310772, 1638465, 1966158, 2184620, 3276930, 3932316, 4915395, 6553860, 9830790, 19661580]

約数ペア:

[(1, 19661580), (2, 9830790), (3, 6553860), (4, 4915395), (5, 3932316), (6, 3276930), (9, 2184620), (10, 1966158), (12, 1638465), (15, 1310772), (18, 1092310), (19, 1034820), (20, 983079), (30, 655386), (36, 546155), (38, 517410), (45, 436924), (57, 344940), (60, 327693), (76, 258705), (90, 218462), (95, 206964), (114, 172470), (171, 114980), (180, 109231), (190, 103482), (228, 86235), (285, 68988), (342, 57490), (380, 51741), (570, 34494), (684, 28745), (855, 22996), (1140, 17247), (1710, 11498), (3420, 5749)]