19814640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{82561}}^1$

素因数の和:82577

約数の個数: 40

約数和(自身を含む): 61426128

約数和(自身を除く): 41611488

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 82561, 165122, 247683, 330244, 412805, 495366, 660488, 825610, 990732, 1238415, 1320976, 1651220, 1981464, 2476830, 3302440, 3962928, 4953660, 6604880, 9907320, 19814640]

約数ペア:

[(1, 19814640), (2, 9907320), (3, 6604880), (4, 4953660), (5, 3962928), (6, 3302440), (8, 2476830), (10, 1981464), (12, 1651220), (15, 1320976), (16, 1238415), (20, 990732), (24, 825610), (30, 660488), (40, 495366), (48, 412805), (60, 330244), (80, 247683), (120, 165122), (240, 82561)]