21889880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{32191}}^1$

素因数の和:32219

約数の個数: 32

約数和(自身を含む): 52151040

約数和(自身を除く): 30261160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 32191, 64382, 128764, 160955, 257528, 321910, 547247, 643820, 1094494, 1287640, 2188988, 2736235, 4377976, 5472470, 10944940, 21889880]

約数ペア:

[(1, 21889880), (2, 10944940), (4, 5472470), (5, 4377976), (8, 2736235), (10, 2188988), (17, 1287640), (20, 1094494), (34, 643820), (40, 547247), (68, 321910), (85, 257528), (136, 160955), (170, 128764), (340, 64382), (680, 32191)]