997885280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{890969}}^1$

素因数の和:890991

約数の個数: 48

約数和(自身を含む): 2694293280

約数和(自身を除く): 1696408000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 890969, 1781938, 3563876, 4454845, 6236783, 7127752, 8909690, 12473566, 14255504, 17819380, 24947132, 28511008, 31183915, 35638760, 49894264, 62367830, 71277520, 99788528, 124735660, 142555040, 199577056, 249471320, 498942640, 997885280]

約数ペア:

[(1, 997885280), (2, 498942640), (4, 249471320), (5, 199577056), (7, 142555040), (8, 124735660), (10, 99788528), (14, 71277520), (16, 62367830), (20, 49894264), (28, 35638760), (32, 31183915), (35, 28511008), (40, 24947132), (56, 17819380), (70, 14255504), (80, 12473566), (112, 8909690), (140, 7127752), (160, 6236783), (224, 4454845), (280, 3563876), (560, 1781938), (1120, 890969)]