78879220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{80489}}^1$

素因数の和:80512

約数の個数: 36

約数和(自身を含む): 192693060

約数和(自身を除く): 113813840

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 80489, 160978, 321956, 402445, 563423, 804890, 1126846, 1609780, 2253692, 2817115, 3943961, 5634230, 7887922, 11268460, 15775844, 19719805, 39439610, 78879220]

約数ペア:

[(1, 78879220), (2, 39439610), (4, 19719805), (5, 15775844), (7, 11268460), (10, 7887922), (14, 5634230), (20, 3943961), (28, 2817115), (35, 2253692), (49, 1609780), (70, 1126846), (98, 804890), (140, 563423), (196, 402445), (245, 321956), (490, 160978), (980, 80489)]