21437240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{587}}^1$

素因数の和:692

約数の個数: 64

約数和(自身を含む): 53343360

約数和(自身を除く): 31906120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 83, 88, 110, 166, 220, 332, 415, 440, 587, 664, 830, 913, 1174, 1660, 1826, 2348, 2935, 3320, 3652, 4565, 4696, 5870, 6457, 7304, 9130, 11740, 12914, 18260, 23480, 25828, 32285, 36520, 48721, 51656, 64570, 97442, 129140, 194884, 243605, 258280, 389768, 487210, 535931, 974420, 1071862, 1948840, 2143724, 2679655, 4287448, 5359310, 10718620, 21437240]

約数ペア:

[(1, 21437240), (2, 10718620), (4, 5359310), (5, 4287448), (8, 2679655), (10, 2143724), (11, 1948840), (20, 1071862), (22, 974420), (40, 535931), (44, 487210), (55, 389768), (83, 258280), (88, 243605), (110, 194884), (166, 129140), (220, 97442), (332, 64570), (415, 51656), (440, 48721), (587, 36520), (664, 32285), (830, 25828), (913, 23480), (1174, 18260), (1660, 12914), (1826, 11740), (2348, 9130), (2935, 7304), (3320, 6457), (3652, 5870), (4565, 4696)]