661962678

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{5197}}^1$

素因数の和:5309

約数の個数: 64

約数和(自身を含む): 1509000192

約数和(自身を除く): 847037514

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 69, 71, 78, 138, 142, 213, 299, 426, 598, 897, 923, 1633, 1794, 1846, 2769, 3266, 4899, 5197, 5538, 9798, 10394, 15591, 21229, 31182, 42458, 63687, 67561, 119531, 127374, 135122, 202683, 239062, 358593, 368987, 405366, 717186, 737974, 1106961, 1553903, 2213922, 3107806, 4661709, 4796831, 8486701, 9323418, 9593662, 14390493, 16973402, 25460103, 28780986, 50920206, 110327113, 220654226, 330981339, 661962678]

約数ペア:

[(1, 661962678), (2, 330981339), (3, 220654226), (6, 110327113), (13, 50920206), (23, 28780986), (26, 25460103), (39, 16973402), (46, 14390493), (69, 9593662), (71, 9323418), (78, 8486701), (138, 4796831), (142, 4661709), (213, 3107806), (299, 2213922), (426, 1553903), (598, 1106961), (897, 737974), (923, 717186), (1633, 405366), (1794, 368987), (1846, 358593), (2769, 239062), (3266, 202683), (4899, 135122), (5197, 127374), (5538, 119531), (9798, 67561), (10394, 63687), (15591, 42458), (21229, 31182)]