20323472

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{491}}^1$

素因数の和:711

約数の個数: 40

約数和(自身を含む): 42705600

約数和(自身を除く): 22382128

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 199, 208, 398, 491, 796, 982, 1592, 1964, 2587, 3184, 3928, 5174, 6383, 7856, 10348, 12766, 20696, 25532, 41392, 51064, 97709, 102128, 195418, 390836, 781672, 1270217, 1563344, 2540434, 5080868, 10161736, 20323472]

約数ペア:

[(1, 20323472), (2, 10161736), (4, 5080868), (8, 2540434), (13, 1563344), (16, 1270217), (26, 781672), (52, 390836), (104, 195418), (199, 102128), (208, 97709), (398, 51064), (491, 41392), (796, 25532), (982, 20696), (1592, 12766), (1964, 10348), (2587, 7856), (3184, 6383), (3928, 5174)]