16839940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{271}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 38384640

約数和(自身を除く): 21544700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 239, 260, 271, 478, 542, 956, 1084, 1195, 1355, 2390, 2710, 3107, 3523, 4780, 5420, 6214, 7046, 12428, 14092, 15535, 17615, 31070, 35230, 62140, 64769, 70460, 129538, 259076, 323845, 647690, 841997, 1295380, 1683994, 3367988, 4209985, 8419970, 16839940]

約数ペア:

[(1, 16839940), (2, 8419970), (4, 4209985), (5, 3367988), (10, 1683994), (13, 1295380), (20, 841997), (26, 647690), (52, 323845), (65, 259076), (130, 129538), (239, 70460), (260, 64769), (271, 62140), (478, 35230), (542, 31070), (956, 17615), (1084, 15535), (1195, 14092), (1355, 12428), (2390, 7046), (2710, 6214), (3107, 5420), (3523, 4780)]