84948520

素因数分解:

$2^3\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2143}}^1$

素因数の和:3145

約数の個数: 32

約数和(自身を含む): 191416320

約数和(自身を除く): 106467800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 991, 1982, 2143, 3964, 4286, 4955, 7928, 8572, 9910, 10715, 17144, 19820, 21430, 39640, 42860, 85720, 2123713, 4247426, 8494852, 10618565, 16989704, 21237130, 42474260, 84948520]

約数ペア:

[(1, 84948520), (2, 42474260), (4, 21237130), (5, 16989704), (8, 10618565), (10, 8494852), (20, 4247426), (40, 2123713), (991, 85720), (1982, 42860), (2143, 39640), (3964, 21430), (4286, 19820), (4955, 17144), (7928, 10715), (8572, 9910)]