65428720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{16691}}^1$

素因数の和:16718

約数の個数: 60

約数和(自身を含む): 176968584

約数和(自身を除く): 111539864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 16691, 33382, 66764, 83455, 116837, 133528, 166910, 233674, 267056, 333820, 467348, 584185, 667640, 817859, 934696, 1168370, 1335280, 1635718, 1869392, 2336740, 3271436, 4089295, 4673480, 6542872, 8178590, 9346960, 13085744, 16357180, 32714360, 65428720]

約数ペア:

[(1, 65428720), (2, 32714360), (4, 16357180), (5, 13085744), (7, 9346960), (8, 8178590), (10, 6542872), (14, 4673480), (16, 4089295), (20, 3271436), (28, 2336740), (35, 1869392), (40, 1635718), (49, 1335280), (56, 1168370), (70, 934696), (80, 817859), (98, 667640), (112, 584185), (140, 467348), (196, 333820), (245, 267056), (280, 233674), (392, 166910), (490, 133528), (560, 116837), (784, 83455), (980, 66764), (1960, 33382), (3920, 16691)]