20907392

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:535

約数の個数: 64

約数和(自身を含む): 47001600

約数和(自身を除く): 26094208

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 32, 44, 62, 64, 88, 124, 128, 176, 248, 341, 352, 479, 496, 682, 704, 958, 992, 1364, 1408, 1916, 1984, 2728, 3832, 3968, 5269, 5456, 7664, 10538, 10912, 14849, 15328, 21076, 21824, 29698, 30656, 42152, 43648, 59396, 61312, 84304, 118792, 163339, 168608, 237584, 326678, 337216, 475168, 653356, 674432, 950336, 1306712, 1900672, 2613424, 5226848, 10453696, 20907392]

約数ペア:

[(1, 20907392), (2, 10453696), (4, 5226848), (8, 2613424), (11, 1900672), (16, 1306712), (22, 950336), (31, 674432), (32, 653356), (44, 475168), (62, 337216), (64, 326678), (88, 237584), (124, 168608), (128, 163339), (176, 118792), (248, 84304), (341, 61312), (352, 59396), (479, 43648), (496, 42152), (682, 30656), (704, 29698), (958, 21824), (992, 21076), (1364, 15328), (1408, 14849), (1916, 10912), (1984, 10538), (2728, 7664), (3832, 5456), (3968, 5269)]