19825280

素因数分解:

$2^7\times 5^1\times {\mathrm{30977}}^1$

素因数の和:30996

約数の個数: 32

約数和(自身を含む): 47396340

約数和(自身を除く): 27571060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 30977, 61954, 123908, 154885, 247816, 309770, 495632, 619540, 991264, 1239080, 1982528, 2478160, 3965056, 4956320, 9912640, 19825280]

約数ペア:

[(1, 19825280), (2, 9912640), (4, 4956320), (5, 3965056), (8, 2478160), (10, 1982528), (16, 1239080), (20, 991264), (32, 619540), (40, 495632), (64, 309770), (80, 247816), (128, 154885), (160, 123908), (320, 61954), (640, 30977)]