661353440

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{613}}^2$

素因数の和:1252

約数の個数: 72

約数和(自身を含む): 1707273288

約数和(自身を除く): 1045919848

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 613, 880, 1226, 1760, 2452, 3065, 4904, 6130, 6743, 9808, 12260, 13486, 19616, 24520, 26972, 33715, 49040, 53944, 67430, 98080, 107888, 134860, 215776, 269720, 375769, 539440, 751538, 1078880, 1503076, 1878845, 3006152, 3757690, 4133459, 6012304, 7515380, 8266918, 12024608, 15030760, 16533836, 20667295, 30061520, 33067672, 41334590, 60123040, 66135344, 82669180, 132270688, 165338360, 330676720, 661353440]

約数ペア:

[(1, 661353440), (2, 330676720), (4, 165338360), (5, 132270688), (8, 82669180), (10, 66135344), (11, 60123040), (16, 41334590), (20, 33067672), (22, 30061520), (32, 20667295), (40, 16533836), (44, 15030760), (55, 12024608), (80, 8266918), (88, 7515380), (110, 6012304), (160, 4133459), (176, 3757690), (220, 3006152), (352, 1878845), (440, 1503076), (613, 1078880), (880, 751538), (1226, 539440), (1760, 375769), (2452, 269720), (3065, 215776), (4904, 134860), (6130, 107888), (6743, 98080), (9808, 67430), (12260, 53944), (13486, 49040), (19616, 33715), (24520, 26972)]