81809960

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1\times {\mathrm{331}}^1$

素因数の和:546

約数の個数: 64

約数和(自身を含む): 190753920

約数和(自身を除く): 108943960

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 167, 185, 296, 331, 334, 370, 662, 668, 740, 835, 1324, 1336, 1480, 1655, 1670, 2648, 3310, 3340, 6179, 6620, 6680, 12247, 12358, 13240, 24494, 24716, 30895, 48988, 49432, 55277, 61235, 61790, 97976, 110554, 122470, 123580, 221108, 244940, 247160, 276385, 442216, 489880, 552770, 1105540, 2045249, 2211080, 4090498, 8180996, 10226245, 16361992, 20452490, 40904980, 81809960]

約数ペア:

[(1, 81809960), (2, 40904980), (4, 20452490), (5, 16361992), (8, 10226245), (10, 8180996), (20, 4090498), (37, 2211080), (40, 2045249), (74, 1105540), (148, 552770), (167, 489880), (185, 442216), (296, 276385), (331, 247160), (334, 244940), (370, 221108), (662, 123580), (668, 122470), (740, 110554), (835, 97976), (1324, 61790), (1336, 61235), (1480, 55277), (1655, 49432), (1670, 48988), (2648, 30895), (3310, 24716), (3340, 24494), (6179, 13240), (6620, 12358), (6680, 12247)]