81221520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{338423}}^1$

素因数の和:338439

約数の個数: 40

約数和(自身を含む): 251787456

約数和(自身を除く): 170565936

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 338423, 676846, 1015269, 1353692, 1692115, 2030538, 2707384, 3384230, 4061076, 5076345, 5414768, 6768460, 8122152, 10152690, 13536920, 16244304, 20305380, 27073840, 40610760, 81221520]

約数ペア:

[(1, 81221520), (2, 40610760), (3, 27073840), (4, 20305380), (5, 16244304), (6, 13536920), (8, 10152690), (10, 8122152), (12, 6768460), (15, 5414768), (16, 5076345), (20, 4061076), (24, 3384230), (30, 2707384), (40, 2030538), (48, 1692115), (60, 1353692), (80, 1015269), (120, 676846), (240, 338423)]