21971840

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3121}}^1$

素因数の和:3151

約数の個数: 64

約数和(自身を含む): 57319920

約数和(自身を除く): 35348080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 3121, 3520, 6242, 7040, 12484, 15605, 24968, 31210, 34331, 49936, 62420, 68662, 99872, 124840, 137324, 171655, 199744, 249680, 274648, 343310, 399488, 499360, 549296, 686620, 998720, 1098592, 1373240, 1997440, 2197184, 2746480, 4394368, 5492960, 10985920, 21971840]

約数ペア:

[(1, 21971840), (2, 10985920), (4, 5492960), (5, 4394368), (8, 2746480), (10, 2197184), (11, 1997440), (16, 1373240), (20, 1098592), (22, 998720), (32, 686620), (40, 549296), (44, 499360), (55, 399488), (64, 343310), (80, 274648), (88, 249680), (110, 199744), (128, 171655), (160, 137324), (176, 124840), (220, 99872), (320, 68662), (352, 62420), (440, 49936), (640, 34331), (704, 31210), (880, 24968), (1408, 15605), (1760, 12484), (3121, 7040), (3520, 6242)]