9984990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{499}}^1$

素因数の和:561

約数の個数: 64

約数和(自身を含む): 25920000

約数和(自身を除く): 15935010

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 29, 30, 46, 58, 69, 87, 115, 138, 145, 174, 230, 290, 345, 435, 499, 667, 690, 870, 998, 1334, 1497, 2001, 2495, 2994, 3335, 4002, 4990, 6670, 7485, 10005, 11477, 14471, 14970, 20010, 22954, 28942, 34431, 43413, 57385, 68862, 72355, 86826, 114770, 144710, 172155, 217065, 332833, 344310, 434130, 665666, 998499, 1664165, 1996998, 3328330, 4992495, 9984990]

約数ペア:

[(1, 9984990), (2, 4992495), (3, 3328330), (5, 1996998), (6, 1664165), (10, 998499), (15, 665666), (23, 434130), (29, 344310), (30, 332833), (46, 217065), (58, 172155), (69, 144710), (87, 114770), (115, 86826), (138, 72355), (145, 68862), (174, 57385), (230, 43413), (290, 34431), (345, 28942), (435, 22954), (499, 20010), (667, 14970), (690, 14471), (870, 11477), (998, 10005), (1334, 7485), (1497, 6670), (2001, 4990), (2495, 4002), (2994, 3335)]