20742928

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:523

約数の個数: 40

約数和(自身を含む): 41722776

約数和(自身を除く): 20979848

約数列:

[1, 2, 4, 8, 16, 53, 61, 106, 122, 212, 244, 401, 424, 488, 802, 848, 976, 1604, 3208, 3233, 6416, 6466, 12932, 21253, 24461, 25864, 42506, 48922, 51728, 85012, 97844, 170024, 195688, 340048, 391376, 1296433, 2592866, 5185732, 10371464, 20742928]

約数ペア:

[(1, 20742928), (2, 10371464), (4, 5185732), (8, 2592866), (16, 1296433), (53, 391376), (61, 340048), (106, 195688), (122, 170024), (212, 97844), (244, 85012), (401, 51728), (424, 48922), (488, 42506), (802, 25864), (848, 24461), (976, 21253), (1604, 12932), (3208, 6466), (3233, 6416)]