81081988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{281}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 159183360

約数和(自身を除く): 78101372

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 179, 281, 358, 403, 562, 716, 806, 1124, 1612, 2327, 3653, 4654, 5549, 7306, 8711, 9308, 11098, 14612, 17422, 22196, 34844, 50299, 72137, 100598, 113243, 144274, 201196, 226486, 288548, 452972, 653887, 1307774, 1559269, 2615548, 3118538, 6237076, 20270497, 40540994, 81081988]

約数ペア:

[(1, 81081988), (2, 40540994), (4, 20270497), (13, 6237076), (26, 3118538), (31, 2615548), (52, 1559269), (62, 1307774), (124, 653887), (179, 452972), (281, 288548), (358, 226486), (403, 201196), (562, 144274), (716, 113243), (806, 100598), (1124, 72137), (1612, 50299), (2327, 34844), (3653, 22196), (4654, 17422), (5549, 14612), (7306, 11098), (8711, 9308)]