217778840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{18839}}^1$

素因数の和:18884

約数の個数: 48

約数和(自身を含む): 520549200

約数和(自身を除く): 302770360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 2312, 2890, 5780, 11560, 18839, 37678, 75356, 94195, 150712, 188390, 320263, 376780, 640526, 753560, 1281052, 1601315, 2562104, 3202630, 5444471, 6405260, 10888942, 12810520, 21777884, 27222355, 43555768, 54444710, 108889420, 217778840]

約数ペア:

[(1, 217778840), (2, 108889420), (4, 54444710), (5, 43555768), (8, 27222355), (10, 21777884), (17, 12810520), (20, 10888942), (34, 6405260), (40, 5444471), (68, 3202630), (85, 2562104), (136, 1601315), (170, 1281052), (289, 753560), (340, 640526), (578, 376780), (680, 320263), (1156, 188390), (1445, 150712), (2312, 94195), (2890, 75356), (5780, 37678), (11560, 18839)]