81275800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{13109}}^1$

素因数の和:13156

約数の個数: 48

約数和(自身を含む): 195076800

約数和(自身を除く): 113801000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 6200, 13109, 26218, 52436, 65545, 104872, 131090, 262180, 327725, 406379, 524360, 655450, 812758, 1310900, 1625516, 2031895, 2621800, 3251032, 4063790, 8127580, 10159475, 16255160, 20318950, 40637900, 81275800]

約数ペア:

[(1, 81275800), (2, 40637900), (4, 20318950), (5, 16255160), (8, 10159475), (10, 8127580), (20, 4063790), (25, 3251032), (31, 2621800), (40, 2031895), (50, 1625516), (62, 1310900), (100, 812758), (124, 655450), (155, 524360), (200, 406379), (248, 327725), (310, 262180), (620, 131090), (775, 104872), (1240, 65545), (1550, 52436), (3100, 26218), (6200, 13109)]