219872060

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1\times {\mathrm{787}}^1$

素因数の和:1086

約数の個数: 48

約数和(自身を含む): 471948960

約数和(自身を除く): 252076900

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 229, 244, 305, 458, 610, 787, 916, 1145, 1220, 1574, 2290, 3148, 3935, 4580, 7870, 13969, 15740, 27938, 48007, 55876, 69845, 96014, 139690, 180223, 192028, 240035, 279380, 360446, 480070, 720892, 901115, 960140, 1802230, 3604460, 10993603, 21987206, 43974412, 54968015, 109936030, 219872060]

約数ペア:

[(1, 219872060), (2, 109936030), (4, 54968015), (5, 43974412), (10, 21987206), (20, 10993603), (61, 3604460), (122, 1802230), (229, 960140), (244, 901115), (305, 720892), (458, 480070), (610, 360446), (787, 279380), (916, 240035), (1145, 192028), (1220, 180223), (1574, 139690), (2290, 96014), (3148, 69845), (3935, 55876), (4580, 48007), (7870, 27938), (13969, 15740)]