21001864

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2269}}^1$

素因数の和:2377

約数の個数: 32

約数和(自身を含む): 42903000

約数和(自身を除く): 21901136

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2269, 2314, 4538, 4628, 9076, 9256, 18152, 29497, 58994, 117988, 201941, 235976, 403882, 807764, 1615528, 2625233, 5250466, 10500932, 21001864]

約数ペア:

[(1, 21001864), (2, 10500932), (4, 5250466), (8, 2625233), (13, 1615528), (26, 807764), (52, 403882), (89, 235976), (104, 201941), (178, 117988), (356, 58994), (712, 29497), (1157, 18152), (2269, 9256), (2314, 9076), (4538, 4628)]