2420980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 5604480

約数和(自身を除く): 3183500

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 277, 380, 437, 460, 554, 874, 1108, 1385, 1748, 2185, 2770, 4370, 5263, 5540, 6371, 8740, 10526, 12742, 21052, 25484, 26315, 31855, 52630, 63710, 105260, 121049, 127420, 242098, 484196, 605245, 1210490, 2420980]

約数ペア:

[(1, 2420980), (2, 1210490), (4, 605245), (5, 484196), (10, 242098), (19, 127420), (20, 121049), (23, 105260), (38, 63710), (46, 52630), (76, 31855), (92, 26315), (95, 25484), (115, 21052), (190, 12742), (230, 10526), (277, 8740), (380, 6371), (437, 5540), (460, 5263), (554, 4370), (874, 2770), (1108, 2185), (1385, 1748)]