20178013375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{288773}}^1$

素因数の和:288844

約数の個数: 32

約数和(自身を含む): 27750026304

約数和(自身を除く): 7572012929

約数列:

[1, 5, 13, 25, 43, 65, 125, 215, 325, 559, 1075, 1625, 2795, 5375, 13975, 69875, 288773, 1443865, 3754049, 7219325, 12417239, 18770245, 36096625, 62086195, 93851225, 161424107, 310430975, 469256125, 807120535, 1552154875, 4035602675, 20178013375]

約数ペア:

[(1, 20178013375), (5, 4035602675), (13, 1552154875), (25, 807120535), (43, 469256125), (65, 310430975), (125, 161424107), (215, 93851225), (325, 62086195), (559, 36096625), (1075, 18770245), (1625, 12417239), (2795, 7219325), (5375, 3754049), (13975, 1443865), (69875, 288773)]