221609140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{241}}^1\times {\mathrm{1999}}^1$

素因数の和:2272

約数の個数: 48

約数和(自身を含む): 487872000

約数和(自身を除く): 266262860

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 241, 460, 482, 964, 1205, 1999, 2410, 3998, 4820, 5543, 7996, 9995, 11086, 19990, 22172, 27715, 39980, 45977, 55430, 91954, 110860, 183908, 229885, 459770, 481759, 919540, 963518, 1927036, 2408795, 4817590, 9635180, 11080457, 22160914, 44321828, 55402285, 110804570, 221609140]

約数ペア:

[(1, 221609140), (2, 110804570), (4, 55402285), (5, 44321828), (10, 22160914), (20, 11080457), (23, 9635180), (46, 4817590), (92, 2408795), (115, 1927036), (230, 963518), (241, 919540), (460, 481759), (482, 459770), (964, 229885), (1205, 183908), (1999, 110860), (2410, 91954), (3998, 55430), (4820, 45977), (5543, 39980), (7996, 27715), (9995, 22172), (11086, 19990)]