278879140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{439}}^1\times {\mathrm{1381}}^1$

素因数の和:1852

約数の個数: 48

約数和(自身を含む): 612944640

約数和(自身を除く): 334065500

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 439, 460, 878, 1381, 1756, 2195, 2762, 4390, 5524, 6905, 8780, 10097, 13810, 20194, 27620, 31763, 40388, 50485, 63526, 100970, 127052, 158815, 201940, 317630, 606259, 635260, 1212518, 2425036, 3031295, 6062590, 12125180, 13943957, 27887914, 55775828, 69719785, 139439570, 278879140]

約数ペア:

[(1, 278879140), (2, 139439570), (4, 69719785), (5, 55775828), (10, 27887914), (20, 13943957), (23, 12125180), (46, 6062590), (92, 3031295), (115, 2425036), (230, 1212518), (439, 635260), (460, 606259), (878, 317630), (1381, 201940), (1756, 158815), (2195, 127052), (2762, 100970), (4390, 63526), (5524, 50485), (6905, 40388), (8780, 31763), (10097, 27620), (13810, 20194)]