653867020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1\times {\mathrm{977}}^1$

素因数の和:1402

約数の個数: 48

約数和(自身を含む): 1391654880

約数和(自身を除く): 737787860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 307, 436, 545, 614, 977, 1090, 1228, 1535, 1954, 2180, 3070, 3908, 4885, 6140, 9770, 19540, 33463, 66926, 106493, 133852, 167315, 212986, 299939, 334630, 425972, 532465, 599878, 669260, 1064930, 1199756, 1499695, 2129860, 2999390, 5998780, 32693351, 65386702, 130773404, 163466755, 326933510, 653867020]

約数ペア:

[(1, 653867020), (2, 326933510), (4, 163466755), (5, 130773404), (10, 65386702), (20, 32693351), (109, 5998780), (218, 2999390), (307, 2129860), (436, 1499695), (545, 1199756), (614, 1064930), (977, 669260), (1090, 599878), (1228, 532465), (1535, 425972), (1954, 334630), (2180, 299939), (3070, 212986), (3908, 167315), (4885, 133852), (6140, 106493), (9770, 66926), (19540, 33463)]