66661780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1361}}^1$

素因数の和:1480

約数の個数: 48

約数和(自身を含む): 146442240

約数和(自身を除く): 79780460

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 79, 124, 155, 158, 310, 316, 395, 620, 790, 1361, 1580, 2449, 2722, 4898, 5444, 6805, 9796, 12245, 13610, 24490, 27220, 42191, 48980, 84382, 107519, 168764, 210955, 215038, 421910, 430076, 537595, 843820, 1075190, 2150380, 3333089, 6666178, 13332356, 16665445, 33330890, 66661780]

約数ペア:

[(1, 66661780), (2, 33330890), (4, 16665445), (5, 13332356), (10, 6666178), (20, 3333089), (31, 2150380), (62, 1075190), (79, 843820), (124, 537595), (155, 430076), (158, 421910), (310, 215038), (316, 210955), (395, 168764), (620, 107519), (790, 84382), (1361, 48980), (1580, 42191), (2449, 27220), (2722, 24490), (4898, 13610), (5444, 12245), (6805, 9796)]