21293528

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4519}}^1$

素因数の和:4575

約数の個数: 32

約数和(自身を含む): 43392000

約数和(自身を除く): 22098472

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 76, 124, 152, 248, 589, 1178, 2356, 4519, 4712, 9038, 18076, 36152, 85861, 140089, 171722, 280178, 343444, 560356, 686888, 1120712, 2661691, 5323382, 10646764, 21293528]

約数ペア:

[(1, 21293528), (2, 10646764), (4, 5323382), (8, 2661691), (19, 1120712), (31, 686888), (38, 560356), (62, 343444), (76, 280178), (124, 171722), (152, 140089), (248, 85861), (589, 36152), (1178, 18076), (2356, 9038), (4519, 4712)]