220921720

素因数分解:

$2^3\times 5^1\times {\mathrm{809}}^1\times {\mathrm{6827}}^1$

素因数の和:7647

約数の個数: 32

約数和(自身を含む): 497761200

約数和(自身を除く): 276839480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 809, 1618, 3236, 4045, 6472, 6827, 8090, 13654, 16180, 27308, 32360, 34135, 54616, 68270, 136540, 273080, 5523043, 11046086, 22092172, 27615215, 44184344, 55230430, 110460860, 220921720]

約数ペア:

[(1, 220921720), (2, 110460860), (4, 55230430), (5, 44184344), (8, 27615215), (10, 22092172), (20, 11046086), (40, 5523043), (809, 273080), (1618, 136540), (3236, 68270), (4045, 54616), (6472, 34135), (6827, 32360), (8090, 27308), (13654, 16180)]