1999880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{173}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 4807620

約数和(自身を除く): 2807740

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 173, 289, 340, 346, 578, 680, 692, 865, 1156, 1384, 1445, 1730, 2312, 2890, 2941, 3460, 5780, 5882, 6920, 11560, 11764, 14705, 23528, 29410, 49997, 58820, 99994, 117640, 199988, 249985, 399976, 499970, 999940, 1999880]

約数ペア:

[(1, 1999880), (2, 999940), (4, 499970), (5, 399976), (8, 249985), (10, 199988), (17, 117640), (20, 99994), (34, 58820), (40, 49997), (68, 29410), (85, 23528), (136, 14705), (170, 11764), (173, 11560), (289, 6920), (340, 5882), (346, 5780), (578, 3460), (680, 2941), (692, 2890), (865, 2312), (1156, 1730), (1384, 1445)]