6781840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6521}}^1$

素因数の和:6547

約数の個数: 40

約数和(自身を含む): 16983288

約数和(自身を除く): 10201448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 6521, 13042, 26084, 32605, 52168, 65210, 84773, 104336, 130420, 169546, 260840, 339092, 423865, 521680, 678184, 847730, 1356368, 1695460, 3390920, 6781840]

約数ペア:

[(1, 6781840), (2, 3390920), (4, 1695460), (5, 1356368), (8, 847730), (10, 678184), (13, 521680), (16, 423865), (20, 339092), (26, 260840), (40, 169546), (52, 130420), (65, 104336), (80, 84773), (104, 65210), (130, 52168), (208, 32605), (260, 26084), (520, 13042), (1040, 6521)]