20806890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1721}}^1$

素因数の和:1775

約数の個数: 64

約数和(自身を含む): 55544832

約数和(自身を除く): 34737942

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 31, 39, 62, 65, 78, 93, 130, 155, 186, 195, 310, 390, 403, 465, 806, 930, 1209, 1721, 2015, 2418, 3442, 4030, 5163, 6045, 8605, 10326, 12090, 17210, 22373, 25815, 44746, 51630, 53351, 67119, 106702, 111865, 134238, 160053, 223730, 266755, 320106, 335595, 533510, 671190, 693563, 800265, 1387126, 1600530, 2080689, 3467815, 4161378, 6935630, 10403445, 20806890]

約数ペア:

[(1, 20806890), (2, 10403445), (3, 6935630), (5, 4161378), (6, 3467815), (10, 2080689), (13, 1600530), (15, 1387126), (26, 800265), (30, 693563), (31, 671190), (39, 533510), (62, 335595), (65, 320106), (78, 266755), (93, 223730), (130, 160053), (155, 134238), (186, 111865), (195, 106702), (310, 67119), (390, 53351), (403, 51630), (465, 44746), (806, 25815), (930, 22373), (1209, 17210), (1721, 12090), (2015, 10326), (2418, 8605), (3442, 6045), (4030, 5163)]