55515551

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 70912128

約数和(自身を除く): 15396577

約数列:

[1, 7, 13, 61, 73, 91, 137, 427, 511, 793, 949, 959, 1781, 4453, 5551, 6643, 8357, 10001, 12467, 31171, 57889, 58499, 70007, 108641, 130013, 405223, 610061, 760487, 910091, 4270427, 7930793, 55515551]

約数ペア:

[(1, 55515551), (7, 7930793), (13, 4270427), (61, 910091), (73, 760487), (91, 610061), (137, 405223), (427, 130013), (511, 108641), (793, 70007), (949, 58499), (959, 57889), (1781, 31171), (4453, 12467), (5551, 10001), (6643, 8357)]