20742380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61007}}^1$

素因数の和:61033

約数の個数: 24

約数和(自身を含む): 46122048

約数和(自身を除く): 25379668

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61007, 122014, 244028, 305035, 610070, 1037119, 1220140, 2074238, 4148476, 5185595, 10371190, 20742380]

約数ペア:

[(1, 20742380), (2, 10371190), (4, 5185595), (5, 4148476), (10, 2074238), (17, 1220140), (20, 1037119), (34, 610070), (68, 305035), (85, 244028), (170, 122014), (340, 61007)]