1398880

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{1249}}^1$

素因数の和:1271

約数の個数: 48

約数和(自身を含む): 3780000

約数和(自身を除く): 2381120

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, 1249, 2498, 4996, 6245, 8743, 9992, 12490, 17486, 19984, 24980, 34972, 39968, 43715, 49960, 69944, 87430, 99920, 139888, 174860, 199840, 279776, 349720, 699440, 1398880]

約数ペア:

[(1, 1398880), (2, 699440), (4, 349720), (5, 279776), (7, 199840), (8, 174860), (10, 139888), (14, 99920), (16, 87430), (20, 69944), (28, 49960), (32, 43715), (35, 39968), (40, 34972), (56, 24980), (70, 19984), (80, 17486), (112, 12490), (140, 9992), (160, 8743), (224, 6245), (280, 4996), (560, 2498), (1120, 1249)]