40721440

素因数分解:

$2^5\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1831}}^1$

素因数の和:1985

約数の個数: 48

約数和(自身を含む): 96949440

約数和(自身を除く): 56228000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 139, 160, 278, 556, 695, 1112, 1390, 1831, 2224, 2780, 3662, 4448, 5560, 7324, 9155, 11120, 14648, 18310, 22240, 29296, 36620, 58592, 73240, 146480, 254509, 292960, 509018, 1018036, 1272545, 2036072, 2545090, 4072144, 5090180, 8144288, 10180360, 20360720, 40721440]

約数ペア:

[(1, 40721440), (2, 20360720), (4, 10180360), (5, 8144288), (8, 5090180), (10, 4072144), (16, 2545090), (20, 2036072), (32, 1272545), (40, 1018036), (80, 509018), (139, 292960), (160, 254509), (278, 146480), (556, 73240), (695, 58592), (1112, 36620), (1390, 29296), (1831, 22240), (2224, 18310), (2780, 14648), (3662, 11120), (4448, 9155), (5560, 7324)]