20478952

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2939}}^1$

素因数の和:3025

約数の個数: 32

約数和(自身を含む): 41983200

約数和(自身を除く): 21504248

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 2939, 3484, 5878, 6968, 11756, 23512, 38207, 76414, 152828, 196913, 305656, 393826, 787652, 1575304, 2559869, 5119738, 10239476, 20478952]

約数ペア:

[(1, 20478952), (2, 10239476), (4, 5119738), (8, 2559869), (13, 1575304), (26, 787652), (52, 393826), (67, 305656), (104, 196913), (134, 152828), (268, 76414), (536, 38207), (871, 23512), (1742, 11756), (2939, 6968), (3484, 5878)]