204781040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1163}}^1$

素因数の和:1278

約数の個数: 80

約数和(自身を含む): 498825216

約数和(自身を除く): 294044176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 71, 80, 124, 142, 155, 248, 284, 310, 355, 496, 568, 620, 710, 1136, 1163, 1240, 1420, 2201, 2326, 2480, 2840, 4402, 4652, 5680, 5815, 8804, 9304, 11005, 11630, 17608, 18608, 22010, 23260, 35216, 36053, 44020, 46520, 72106, 82573, 88040, 93040, 144212, 165146, 176080, 180265, 288424, 330292, 360530, 412865, 576848, 660584, 721060, 825730, 1321168, 1442120, 1651460, 2559763, 2884240, 3302920, 5119526, 6605840, 10239052, 12798815, 20478104, 25597630, 40956208, 51195260, 102390520, 204781040]

約数ペア:

[(1, 204781040), (2, 102390520), (4, 51195260), (5, 40956208), (8, 25597630), (10, 20478104), (16, 12798815), (20, 10239052), (31, 6605840), (40, 5119526), (62, 3302920), (71, 2884240), (80, 2559763), (124, 1651460), (142, 1442120), (155, 1321168), (248, 825730), (284, 721060), (310, 660584), (355, 576848), (496, 412865), (568, 360530), (620, 330292), (710, 288424), (1136, 180265), (1163, 176080), (1240, 165146), (1420, 144212), (2201, 93040), (2326, 88040), (2480, 82573), (2840, 72106), (4402, 46520), (4652, 44020), (5680, 36053), (5815, 35216), (8804, 23260), (9304, 22010), (11005, 18608), (11630, 17608)]