219640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1$

素因数の和:64

約数の個数: 48

約数和(自身を含む): 552600

約数和(自身を除く): 332960

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 289, 323, 340, 380, 578, 646, 680, 760, 1156, 1292, 1445, 1615, 2312, 2584, 2890, 3230, 5491, 5780, 6460, 10982, 11560, 12920, 21964, 27455, 43928, 54910, 109820, 219640]

約数ペア:

[(1, 219640), (2, 109820), (4, 54910), (5, 43928), (8, 27455), (10, 21964), (17, 12920), (19, 11560), (20, 10982), (34, 6460), (38, 5780), (40, 5491), (68, 3230), (76, 2890), (85, 2584), (95, 2312), (136, 1615), (152, 1445), (170, 1292), (190, 1156), (289, 760), (323, 680), (340, 646), (380, 578)]