721131890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{683}}^1\times {\mathrm{5557}}^1$

素因数の和:6266

約数の個数: 32

約数和(自身を含む): 1368601920

約数和(自身を除く): 647470030

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 683, 1366, 3415, 5557, 6830, 11114, 12977, 25954, 27785, 55570, 64885, 105583, 129770, 211166, 527915, 1055830, 3795431, 7590862, 18977155, 37954310, 72113189, 144226378, 360565945, 721131890]

約数ペア:

[(1, 721131890), (2, 360565945), (5, 144226378), (10, 72113189), (19, 37954310), (38, 18977155), (95, 7590862), (190, 3795431), (683, 1055830), (1366, 527915), (3415, 211166), (5557, 129770), (6830, 105583), (11114, 64885), (12977, 55570), (25954, 27785)]