217377980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{8093}}^1$

素因数の和:8198

約数の個数: 48

約数和(自身を含む): 489525120

約数和(自身を除く): 272147140

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 79, 85, 158, 170, 316, 340, 395, 790, 1343, 1580, 2686, 5372, 6715, 8093, 13430, 16186, 26860, 32372, 40465, 80930, 137581, 161860, 275162, 550324, 639347, 687905, 1278694, 1375810, 2557388, 2751620, 3196735, 6393470, 10868899, 12786940, 21737798, 43475596, 54344495, 108688990, 217377980]

約数ペア:

[(1, 217377980), (2, 108688990), (4, 54344495), (5, 43475596), (10, 21737798), (17, 12786940), (20, 10868899), (34, 6393470), (68, 3196735), (79, 2751620), (85, 2557388), (158, 1375810), (170, 1278694), (316, 687905), (340, 639347), (395, 550324), (790, 275162), (1343, 161860), (1580, 137581), (2686, 80930), (5372, 40465), (6715, 32372), (8093, 26860), (13430, 16186)]