87999880

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{19469}}^1$

素因数の和:19593

約数の個数: 32

約数和(自身を含む): 199762200

約数和(自身を除く): 111762320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 19469, 38938, 77876, 97345, 155752, 194690, 389380, 778760, 2199997, 4399994, 8799988, 10999985, 17599976, 21999970, 43999940, 87999880]

約数ペア:

[(1, 87999880), (2, 43999940), (4, 21999970), (5, 17599976), (8, 10999985), (10, 8799988), (20, 4399994), (40, 2199997), (113, 778760), (226, 389380), (452, 194690), (565, 155752), (904, 97345), (1130, 77876), (2260, 38938), (4520, 19469)]