20452480

素因数分解:

$2^7\times 5^1\times {\mathrm{31957}}^1$

素因数の和:31976

約数の個数: 32

約数和(自身を含む): 48895740

約数和(自身を除く): 28443260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31957, 63914, 127828, 159785, 255656, 319570, 511312, 639140, 1022624, 1278280, 2045248, 2556560, 4090496, 5113120, 10226240, 20452480]

約数ペア:

[(1, 20452480), (2, 10226240), (4, 5113120), (5, 4090496), (8, 2556560), (10, 2045248), (16, 1278280), (20, 1022624), (32, 639140), (40, 511312), (64, 319570), (80, 255656), (128, 159785), (160, 127828), (320, 63914), (640, 31957)]