20731120

素因数分解:

$2^4\times 5^1\times {\mathrm{479}}^1\times {\mathrm{541}}^1$

素因数の和:1033

約数の個数: 40

約数和(自身を含む): 48389760

約数和(自身を除く): 27658640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 479, 541, 958, 1082, 1916, 2164, 2395, 2705, 3832, 4328, 4790, 5410, 7664, 8656, 9580, 10820, 19160, 21640, 38320, 43280, 259139, 518278, 1036556, 1295695, 2073112, 2591390, 4146224, 5182780, 10365560, 20731120]

約数ペア:

[(1, 20731120), (2, 10365560), (4, 5182780), (5, 4146224), (8, 2591390), (10, 2073112), (16, 1295695), (20, 1036556), (40, 518278), (80, 259139), (479, 43280), (541, 38320), (958, 21640), (1082, 19160), (1916, 10820), (2164, 9580), (2395, 8656), (2705, 7664), (3832, 5410), (4328, 4790)]