214979440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{491}}^1$

素因数の和:938

約数の個数: 80

約数和(自身を含む): 540652896

約数和(自身を除く): 325673456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 421, 491, 520, 842, 982, 1040, 1684, 1964, 2105, 2455, 3368, 3928, 4210, 4910, 5473, 6383, 6736, 7856, 8420, 9820, 10946, 12766, 16840, 19640, 21892, 25532, 27365, 31915, 33680, 39280, 43784, 51064, 54730, 63830, 87568, 102128, 109460, 127660, 206711, 218920, 255320, 413422, 437840, 510640, 826844, 1033555, 1653688, 2067110, 2687243, 3307376, 4134220, 5374486, 8268440, 10748972, 13436215, 16536880, 21497944, 26872430, 42995888, 53744860, 107489720, 214979440]

約数ペア:

[(1, 214979440), (2, 107489720), (4, 53744860), (5, 42995888), (8, 26872430), (10, 21497944), (13, 16536880), (16, 13436215), (20, 10748972), (26, 8268440), (40, 5374486), (52, 4134220), (65, 3307376), (80, 2687243), (104, 2067110), (130, 1653688), (208, 1033555), (260, 826844), (421, 510640), (491, 437840), (520, 413422), (842, 255320), (982, 218920), (1040, 206711), (1684, 127660), (1964, 109460), (2105, 102128), (2455, 87568), (3368, 63830), (3928, 54730), (4210, 51064), (4910, 43784), (5473, 39280), (6383, 33680), (6736, 31915), (7856, 27365), (8420, 25532), (9820, 21892), (10946, 19640), (12766, 16840)]