90173780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{15601}}^1$

素因数の和:15644

約数の個数: 36

約数和(自身を含む): 201172188

約数和(自身を除く): 110998408

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 5780, 15601, 31202, 62404, 78005, 156010, 265217, 312020, 530434, 1060868, 1326085, 2652170, 4508689, 5304340, 9017378, 18034756, 22543445, 45086890, 90173780]

約数ペア:

[(1, 90173780), (2, 45086890), (4, 22543445), (5, 18034756), (10, 9017378), (17, 5304340), (20, 4508689), (34, 2652170), (68, 1326085), (85, 1060868), (170, 530434), (289, 312020), (340, 265217), (578, 156010), (1156, 78005), (1445, 62404), (2890, 31202), (5780, 15601)]