19917513

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{701}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 36796032

約数和(自身を除く): 16878519

約数列:

[1, 3, 7, 9, 11, 21, 33, 41, 63, 77, 99, 123, 231, 287, 369, 451, 693, 701, 861, 1353, 2103, 2583, 3157, 4059, 4907, 6309, 7711, 9471, 14721, 23133, 28413, 28741, 44163, 53977, 69399, 86223, 161931, 201187, 258669, 316151, 485793, 603561, 948453, 1810683, 2213057, 2845359, 6639171, 19917513]

約数ペア:

[(1, 19917513), (3, 6639171), (7, 2845359), (9, 2213057), (11, 1810683), (21, 948453), (33, 603561), (41, 485793), (63, 316151), (77, 258669), (99, 201187), (123, 161931), (231, 86223), (287, 69399), (369, 53977), (451, 44163), (693, 28741), (701, 28413), (861, 23133), (1353, 14721), (2103, 9471), (2583, 7711), (3157, 6309), (4059, 4907)]