21601316

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 43001280

約数和(自身を除く): 21399964

約数列:

[1, 2, 4, 11, 22, 44, 53, 59, 106, 118, 157, 212, 236, 314, 583, 628, 649, 1166, 1298, 1727, 2332, 2596, 3127, 3454, 6254, 6908, 8321, 9263, 12508, 16642, 18526, 33284, 34397, 37052, 68794, 91531, 101893, 137588, 183062, 203786, 366124, 407572, 490939, 981878, 1963756, 5400329, 10800658, 21601316]

約数ペア:

[(1, 21601316), (2, 10800658), (4, 5400329), (11, 1963756), (22, 981878), (44, 490939), (53, 407572), (59, 366124), (106, 203786), (118, 183062), (157, 137588), (212, 101893), (236, 91531), (314, 68794), (583, 37052), (628, 34397), (649, 33284), (1166, 18526), (1298, 16642), (1727, 12508), (2332, 9263), (2596, 8321), (3127, 6908), (3454, 6254)]