697619020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{70183}}^1$

素因数の和:70270

約数の個数: 48

約数和(自身を含む): 1697891328

約数和(自身を除く): 1000272308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 70183, 140366, 280732, 350915, 491281, 701830, 982562, 1403660, 1965124, 2456405, 4912810, 4982993, 9825620, 9965986, 19931972, 24914965, 34880951, 49829930, 69761902, 99659860, 139523804, 174404755, 348809510, 697619020]

約数ペア:

[(1, 697619020), (2, 348809510), (4, 174404755), (5, 139523804), (7, 99659860), (10, 69761902), (14, 49829930), (20, 34880951), (28, 24914965), (35, 19931972), (70, 9965986), (71, 9825620), (140, 4982993), (142, 4912810), (284, 2456405), (355, 1965124), (497, 1403660), (710, 982562), (994, 701830), (1420, 491281), (1988, 350915), (2485, 280732), (4970, 140366), (9940, 70183)]