291219440

素因数分解:

$2^4\times 5^1\times {\mathrm{3640243}}^1$

素因数の和:3640256

約数の個数: 20

約数和(自身を含む): 677085384

約数和(自身を除く): 385865944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3640243, 7280486, 14560972, 18201215, 29121944, 36402430, 58243888, 72804860, 145609720, 291219440]

約数ペア:

[(1, 291219440), (2, 145609720), (4, 72804860), (5, 58243888), (8, 36402430), (10, 29121944), (16, 18201215), (20, 14560972), (40, 7280486), (80, 3640243)]