178177780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{1531}}^1$

素因数の和:1597

約数の個数: 72

約数和(自身を含む): 426986784

約数和(自身を除く): 248809004

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 529, 1012, 1058, 1265, 1531, 2116, 2530, 2645, 3062, 5060, 5290, 5819, 6124, 7655, 10580, 11638, 15310, 16841, 23276, 29095, 30620, 33682, 35213, 58190, 67364, 70426, 84205, 116380, 140852, 168410, 176065, 336820, 352130, 387343, 704260, 774686, 809899, 1549372, 1619798, 1936715, 3239596, 3873430, 4049495, 7746860, 8098990, 8908889, 16197980, 17817778, 35635556, 44544445, 89088890, 178177780]

約数ペア:

[(1, 178177780), (2, 89088890), (4, 44544445), (5, 35635556), (10, 17817778), (11, 16197980), (20, 8908889), (22, 8098990), (23, 7746860), (44, 4049495), (46, 3873430), (55, 3239596), (92, 1936715), (110, 1619798), (115, 1549372), (220, 809899), (230, 774686), (253, 704260), (460, 387343), (506, 352130), (529, 336820), (1012, 176065), (1058, 168410), (1265, 140852), (1531, 116380), (2116, 84205), (2530, 70426), (2645, 67364), (3062, 58190), (5060, 35213), (5290, 33682), (5819, 30620), (6124, 29095), (7655, 23276), (10580, 16841), (11638, 15310)]