3909220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{3989}}^1$

素因数の和:4012

約数の個数: 36

約数和(自身を含む): 9552060

約数和(自身を除く): 5642840

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 3989, 7978, 15956, 19945, 27923, 39890, 55846, 79780, 111692, 139615, 195461, 279230, 390922, 558460, 781844, 977305, 1954610, 3909220]

約数ペア:

[(1, 3909220), (2, 1954610), (4, 977305), (5, 781844), (7, 558460), (10, 390922), (14, 279230), (20, 195461), (28, 139615), (35, 111692), (49, 79780), (70, 55846), (98, 39890), (140, 27923), (196, 19945), (245, 15956), (490, 7978), (980, 3989)]