80490280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{154789}}^1$

素因数の和:154813

約数の個数: 32

約数和(自身を含む): 195035400

約数和(自身を除く): 114545120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 154789, 309578, 619156, 773945, 1238312, 1547890, 2012257, 3095780, 4024514, 6191560, 8049028, 10061285, 16098056, 20122570, 40245140, 80490280]

約数ペア:

[(1, 80490280), (2, 40245140), (4, 20122570), (5, 16098056), (8, 10061285), (10, 8049028), (13, 6191560), (20, 4024514), (26, 3095780), (40, 2012257), (52, 1547890), (65, 1238312), (104, 773945), (130, 619156), (260, 309578), (520, 154789)]