999940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{173}}^1$

素因数の和:216

約数の個数: 36

約数和(自身を含む): 2243556

約数和(自身を除く): 1243616

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 173, 289, 340, 346, 578, 692, 865, 1156, 1445, 1730, 2890, 2941, 3460, 5780, 5882, 11764, 14705, 29410, 49997, 58820, 99994, 199988, 249985, 499970, 999940]

約数ペア:

[(1, 999940), (2, 499970), (4, 249985), (5, 199988), (10, 99994), (17, 58820), (20, 49997), (34, 29410), (68, 14705), (85, 11764), (170, 5882), (173, 5780), (289, 3460), (340, 2941), (346, 2890), (578, 1730), (692, 1445), (865, 1156)]