81586620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2887}}^1$

素因数の和:3059

約数の個数: 72

約数和(自身を含む): 249141984

約数和(自身を除く): 167555364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 157, 180, 314, 471, 628, 785, 942, 1413, 1570, 1884, 2355, 2826, 2887, 3140, 4710, 5652, 5774, 7065, 8661, 9420, 11548, 14130, 14435, 17322, 25983, 28260, 28870, 34644, 43305, 51966, 57740, 86610, 103932, 129915, 173220, 259830, 453259, 519660, 906518, 1359777, 1813036, 2266295, 2719554, 4079331, 4532590, 5439108, 6798885, 8158662, 9065180, 13597770, 16317324, 20396655, 27195540, 40793310, 81586620]

約数ペア:

[(1, 81586620), (2, 40793310), (3, 27195540), (4, 20396655), (5, 16317324), (6, 13597770), (9, 9065180), (10, 8158662), (12, 6798885), (15, 5439108), (18, 4532590), (20, 4079331), (30, 2719554), (36, 2266295), (45, 1813036), (60, 1359777), (90, 906518), (157, 519660), (180, 453259), (314, 259830), (471, 173220), (628, 129915), (785, 103932), (942, 86610), (1413, 57740), (1570, 51966), (1884, 43305), (2355, 34644), (2826, 28870), (2887, 28260), (3140, 25983), (4710, 17322), (5652, 14435), (5774, 14130), (7065, 11548), (8661, 9420)]