18501473080

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1471}}^1\times {\mathrm{3533}}^1$

素因数の和:5104

約数の個数: 64

約数和(自身を含む): 42136588800

約数和(自身を除く): 23635115720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1471, 1780, 2942, 3533, 3560, 5884, 7066, 7355, 11768, 14132, 14710, 17665, 28264, 29420, 35330, 58840, 70660, 130919, 141320, 261838, 314437, 523676, 628874, 654595, 1047352, 1257748, 1309190, 1572185, 2515496, 2618380, 3144370, 5197043, 5236760, 6288740, 10394086, 12577480, 20788172, 25985215, 41576344, 51970430, 103940860, 207881720, 462536827, 925073654, 1850147308, 2312684135, 3700294616, 4625368270, 9250736540, 18501473080]

約数ペア:

[(1, 18501473080), (2, 9250736540), (4, 4625368270), (5, 3700294616), (8, 2312684135), (10, 1850147308), (20, 925073654), (40, 462536827), (89, 207881720), (178, 103940860), (356, 51970430), (445, 41576344), (712, 25985215), (890, 20788172), (1471, 12577480), (1780, 10394086), (2942, 6288740), (3533, 5236760), (3560, 5197043), (5884, 3144370), (7066, 2618380), (7355, 2515496), (11768, 1572185), (14132, 1309190), (14710, 1257748), (17665, 1047352), (28264, 654595), (29420, 628874), (35330, 523676), (58840, 314437), (70660, 261838), (130919, 141320)]