21859140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2621}}^1$

素因数の和:2772

約数の個数: 48

約数和(自身を含む): 61669440

約数和(自身を除く): 39810300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 417, 556, 695, 834, 1390, 1668, 2085, 2621, 2780, 4170, 5242, 7863, 8340, 10484, 13105, 15726, 26210, 31452, 39315, 52420, 78630, 157260, 364319, 728638, 1092957, 1457276, 1821595, 2185914, 3643190, 4371828, 5464785, 7286380, 10929570, 21859140]

約数ペア:

[(1, 21859140), (2, 10929570), (3, 7286380), (4, 5464785), (5, 4371828), (6, 3643190), (10, 2185914), (12, 1821595), (15, 1457276), (20, 1092957), (30, 728638), (60, 364319), (139, 157260), (278, 78630), (417, 52420), (556, 39315), (695, 31452), (834, 26210), (1390, 15726), (1668, 13105), (2085, 10484), (2621, 8340), (2780, 7863), (4170, 5242)]