31278660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{10639}}^1$

素因数の和:10665

約数の個数: 72

約数和(自身を含む): 101888640

約数和(自身を除く): 70609980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 10639, 21278, 31917, 42556, 53195, 63834, 74473, 106390, 127668, 148946, 159585, 212780, 223419, 297892, 319170, 372365, 446838, 521311, 638340, 744730, 893676, 1042622, 1117095, 1489460, 1563933, 2085244, 2234190, 2606555, 3127866, 4468380, 5213110, 6255732, 7819665, 10426220, 15639330, 31278660]

約数ペア:

[(1, 31278660), (2, 15639330), (3, 10426220), (4, 7819665), (5, 6255732), (6, 5213110), (7, 4468380), (10, 3127866), (12, 2606555), (14, 2234190), (15, 2085244), (20, 1563933), (21, 1489460), (28, 1117095), (30, 1042622), (35, 893676), (42, 744730), (49, 638340), (60, 521311), (70, 446838), (84, 372365), (98, 319170), (105, 297892), (140, 223419), (147, 212780), (196, 159585), (210, 148946), (245, 127668), (294, 106390), (420, 74473), (490, 63834), (588, 53195), (735, 42556), (980, 31917), (1470, 21278), (2940, 10639)]