19889128

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:410

約数の個数: 64

約数和(自身を含む): 45417600

約数和(自身を除く): 25528472

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 37, 56, 58, 74, 116, 148, 203, 232, 259, 296, 331, 406, 518, 662, 812, 1036, 1073, 1324, 1624, 2072, 2146, 2317, 2648, 4292, 4634, 7511, 8584, 9268, 9599, 12247, 15022, 18536, 19198, 24494, 30044, 38396, 48988, 60088, 67193, 76792, 85729, 97976, 134386, 171458, 268772, 342916, 355163, 537544, 685832, 710326, 1420652, 2486141, 2841304, 4972282, 9944564, 19889128]

約数ペア:

[(1, 19889128), (2, 9944564), (4, 4972282), (7, 2841304), (8, 2486141), (14, 1420652), (28, 710326), (29, 685832), (37, 537544), (56, 355163), (58, 342916), (74, 268772), (116, 171458), (148, 134386), (203, 97976), (232, 85729), (259, 76792), (296, 67193), (331, 60088), (406, 48988), (518, 38396), (662, 30044), (812, 24494), (1036, 19198), (1073, 18536), (1324, 15022), (1624, 12247), (2072, 9599), (2146, 9268), (2317, 8584), (2648, 7511), (4292, 4634)]