25588480

素因数分解:

$2^8\times 5^1\times {\mathrm{19991}}^1$

素因数の和:20012

約数の個数: 36

約数和(自身を含む): 61295472

約数和(自身を除く): 35706992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 19991, 39982, 79964, 99955, 159928, 199910, 319856, 399820, 639712, 799640, 1279424, 1599280, 2558848, 3198560, 5117696, 6397120, 12794240, 25588480]

約数ペア:

[(1, 25588480), (2, 12794240), (4, 6397120), (5, 5117696), (8, 3198560), (10, 2558848), (16, 1599280), (20, 1279424), (32, 799640), (40, 639712), (64, 399820), (80, 319856), (128, 199910), (160, 159928), (256, 99955), (320, 79964), (640, 39982), (1280, 19991)]