21570840

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19973}}^1$

素因数の和:19993

約数の個数: 64

約数和(自身を含む): 71906400

約数和(自身を除く): 50335560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19973, 39946, 59919, 79892, 99865, 119838, 159784, 179757, 199730, 239676, 299595, 359514, 399460, 479352, 539271, 599190, 719028, 798920, 898785, 1078542, 1198380, 1438056, 1797570, 2157084, 2396760, 2696355, 3595140, 4314168, 5392710, 7190280, 10785420, 21570840]

約数ペア:

[(1, 21570840), (2, 10785420), (3, 7190280), (4, 5392710), (5, 4314168), (6, 3595140), (8, 2696355), (9, 2396760), (10, 2157084), (12, 1797570), (15, 1438056), (18, 1198380), (20, 1078542), (24, 898785), (27, 798920), (30, 719028), (36, 599190), (40, 539271), (45, 479352), (54, 399460), (60, 359514), (72, 299595), (90, 239676), (108, 199730), (120, 179757), (135, 159784), (180, 119838), (216, 99865), (270, 79892), (360, 59919), (540, 39946), (1080, 19973)]