20985545

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 9427255

約数列:

[1, 5, 7, 23, 35, 115, 131, 161, 199, 655, 805, 917, 995, 1393, 3013, 4577, 4585, 6965, 15065, 21091, 22885, 26069, 32039, 105455, 130345, 160195, 182483, 599587, 912415, 2997935, 4197109, 20985545]

約数ペア:

[(1, 20985545), (5, 4197109), (7, 2997935), (23, 912415), (35, 599587), (115, 182483), (131, 160195), (161, 130345), (199, 105455), (655, 32039), (805, 26069), (917, 22885), (995, 21091), (1393, 15065), (3013, 6965), (4577, 4585)]