20099404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 39584160

約数和(自身を除く): 19484756

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 89, 101, 172, 178, 202, 356, 404, 559, 1118, 1157, 1313, 2236, 2314, 2626, 3827, 4343, 4628, 5252, 7654, 8686, 8989, 15308, 17372, 17978, 35956, 49751, 56459, 99502, 112918, 116857, 199004, 225836, 233714, 386527, 467428, 773054, 1546108, 5024851, 10049702, 20099404]

約数ペア:

[(1, 20099404), (2, 10049702), (4, 5024851), (13, 1546108), (26, 773054), (43, 467428), (52, 386527), (86, 233714), (89, 225836), (101, 199004), (172, 116857), (178, 112918), (202, 99502), (356, 56459), (404, 49751), (559, 35956), (1118, 17978), (1157, 17372), (1313, 15308), (2236, 8989), (2314, 8686), (2626, 7654), (3827, 5252), (4343, 4628)]