21045772

素因数分解:

$2^2\times {\mathrm{11}}^3\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:163

約数の個数: 48

約数和(自身を含む): 41811840

約数和(自身を除く): 20766068

約数列:

[1, 2, 4, 11, 22, 44, 59, 67, 118, 121, 134, 236, 242, 268, 484, 649, 737, 1298, 1331, 1474, 2596, 2662, 2948, 3953, 5324, 7139, 7906, 8107, 14278, 15812, 16214, 28556, 32428, 43483, 78529, 86966, 89177, 157058, 173932, 178354, 314116, 356708, 478313, 956626, 1913252, 5261443, 10522886, 21045772]

約数ペア:

[(1, 21045772), (2, 10522886), (4, 5261443), (11, 1913252), (22, 956626), (44, 478313), (59, 356708), (67, 314116), (118, 178354), (121, 173932), (134, 157058), (236, 89177), (242, 86966), (268, 78529), (484, 43483), (649, 32428), (737, 28556), (1298, 16214), (1331, 15812), (1474, 14278), (2596, 8107), (2662, 7906), (2948, 7139), (3953, 5324)]