21163844

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{269}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 42865200

約数和(自身を除く): 21701356

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 89, 178, 221, 269, 356, 442, 538, 884, 1076, 1157, 1513, 2314, 3026, 3497, 4573, 4628, 6052, 6994, 9146, 13988, 18292, 19669, 23941, 39338, 47882, 59449, 78676, 95764, 118898, 237796, 311233, 406997, 622466, 813994, 1244932, 1627988, 5290961, 10581922, 21163844]

約数ペア:

[(1, 21163844), (2, 10581922), (4, 5290961), (13, 1627988), (17, 1244932), (26, 813994), (34, 622466), (52, 406997), (68, 311233), (89, 237796), (178, 118898), (221, 95764), (269, 78676), (356, 59449), (442, 47882), (538, 39338), (884, 23941), (1076, 19669), (1157, 18292), (1513, 13988), (2314, 9146), (3026, 6994), (3497, 6052), (4573, 4628)]