28221315

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{443}}^1$

素因数の和:619

約数の個数: 32

約数和(自身を含む): 47056896

約数和(自身を除く): 18835581

約数列:

[1, 3, 5, 15, 31, 93, 137, 155, 411, 443, 465, 685, 1329, 2055, 2215, 4247, 6645, 12741, 13733, 21235, 41199, 60691, 63705, 68665, 182073, 205995, 303455, 910365, 1881421, 5644263, 9407105, 28221315]

約数ペア:

[(1, 28221315), (3, 9407105), (5, 5644263), (15, 1881421), (31, 910365), (93, 303455), (137, 205995), (155, 182073), (411, 68665), (443, 63705), (465, 60691), (685, 41199), (1329, 21235), (2055, 13733), (2215, 12741), (4247, 6645)]