20107980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1619}}^1$

素因数の和:1660

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 45210420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 90, 92, 108, 115, 135, 138, 180, 207, 230, 270, 276, 345, 414, 460, 540, 621, 690, 828, 1035, 1242, 1380, 1619, 2070, 2484, 3105, 3238, 4140, 4857, 6210, 6476, 8095, 9714, 12420, 14571, 16190, 19428, 24285, 29142, 32380, 37237, 43713, 48570, 58284, 72855, 74474, 87426, 97140, 111711, 145710, 148948, 174852, 186185, 218565, 223422, 291420, 335133, 372370, 437130, 446844, 558555, 670266, 744740, 874260, 1005399, 1117110, 1340532, 1675665, 2010798, 2234220, 3351330, 4021596, 5026995, 6702660, 10053990, 20107980]

約数ペア:

[(1, 20107980), (2, 10053990), (3, 6702660), (4, 5026995), (5, 4021596), (6, 3351330), (9, 2234220), (10, 2010798), (12, 1675665), (15, 1340532), (18, 1117110), (20, 1005399), (23, 874260), (27, 744740), (30, 670266), (36, 558555), (45, 446844), (46, 437130), (54, 372370), (60, 335133), (69, 291420), (90, 223422), (92, 218565), (108, 186185), (115, 174852), (135, 148948), (138, 145710), (180, 111711), (207, 97140), (230, 87426), (270, 74474), (276, 72855), (345, 58284), (414, 48570), (460, 43713), (540, 37237), (621, 32380), (690, 29142), (828, 24285), (1035, 19428), (1242, 16190), (1380, 14571), (1619, 12420), (2070, 9714), (2484, 8095), (3105, 6476), (3238, 6210), (4140, 4857)]