25880240

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3203}}^1$

素因数の和:3317

約数の個数: 40

約数和(自身を含む): 60786288

約数和(自身を除く): 34906048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 3203, 4040, 6406, 8080, 12812, 16015, 25624, 32030, 51248, 64060, 128120, 256240, 323503, 647006, 1294012, 1617515, 2588024, 3235030, 5176048, 6470060, 12940120, 25880240]

約数ペア:

[(1, 25880240), (2, 12940120), (4, 6470060), (5, 5176048), (8, 3235030), (10, 2588024), (16, 1617515), (20, 1294012), (40, 647006), (80, 323503), (101, 256240), (202, 128120), (404, 64060), (505, 51248), (808, 32030), (1010, 25624), (1616, 16015), (2020, 12812), (3203, 8080), (4040, 6406)]