81337760

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72623}}^1$

素因数の和:72645

約数の個数: 48

約数和(自身を含む): 219614976

約数和(自身を除く): 138277216

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72623, 145246, 290492, 363115, 508361, 580984, 726230, 1016722, 1161968, 1452460, 2033444, 2323936, 2541805, 2904920, 4066888, 5083610, 5809840, 8133776, 10167220, 11619680, 16267552, 20334440, 40668880, 81337760]

約数ペア:

[(1, 81337760), (2, 40668880), (4, 20334440), (5, 16267552), (7, 11619680), (8, 10167220), (10, 8133776), (14, 5809840), (16, 5083610), (20, 4066888), (28, 2904920), (32, 2541805), (35, 2323936), (40, 2033444), (56, 1452460), (70, 1161968), (80, 1016722), (112, 726230), (140, 580984), (160, 508361), (224, 363115), (280, 290492), (560, 145246), (1120, 72623)]