289914980

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1\times {\mathrm{977}}^1$

素因数の和:1424

約数の個数: 48

約数和(自身を含む): 627476976

約数和(自身を除く): 337561996

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 401, 740, 802, 977, 1604, 1954, 2005, 3908, 4010, 4885, 8020, 9770, 14837, 19540, 29674, 36149, 59348, 72298, 74185, 144596, 148370, 180745, 296740, 361490, 391777, 722980, 783554, 1567108, 1958885, 3917770, 7835540, 14495749, 28991498, 57982996, 72478745, 144957490, 289914980]

約数ペア:

[(1, 289914980), (2, 144957490), (4, 72478745), (5, 57982996), (10, 28991498), (20, 14495749), (37, 7835540), (74, 3917770), (148, 1958885), (185, 1567108), (370, 783554), (401, 722980), (740, 391777), (802, 361490), (977, 296740), (1604, 180745), (1954, 148370), (2005, 144596), (3908, 74185), (4010, 72298), (4885, 59348), (8020, 36149), (9770, 29674), (14837, 19540)]