21105260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:183

約数の個数: 96

約数和(自身を含む): 52157952

約数和(自身を除く): 31052692

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 43, 44, 46, 55, 86, 92, 97, 110, 115, 172, 194, 215, 220, 230, 253, 388, 430, 460, 473, 485, 506, 860, 946, 970, 989, 1012, 1067, 1265, 1892, 1940, 1978, 2134, 2231, 2365, 2530, 3956, 4171, 4268, 4462, 4730, 4945, 5060, 5335, 8342, 8924, 9460, 9890, 10670, 10879, 11155, 16684, 19780, 20855, 21340, 21758, 22310, 24541, 41710, 43516, 44620, 45881, 49082, 54395, 83420, 91762, 95933, 98164, 108790, 122705, 183524, 191866, 217580, 229405, 245410, 383732, 458810, 479665, 490820, 917620, 959330, 1055263, 1918660, 2110526, 4221052, 5276315, 10552630, 21105260]

約数ペア:

[(1, 21105260), (2, 10552630), (4, 5276315), (5, 4221052), (10, 2110526), (11, 1918660), (20, 1055263), (22, 959330), (23, 917620), (43, 490820), (44, 479665), (46, 458810), (55, 383732), (86, 245410), (92, 229405), (97, 217580), (110, 191866), (115, 183524), (172, 122705), (194, 108790), (215, 98164), (220, 95933), (230, 91762), (253, 83420), (388, 54395), (430, 49082), (460, 45881), (473, 44620), (485, 43516), (506, 41710), (860, 24541), (946, 22310), (970, 21758), (989, 21340), (1012, 20855), (1067, 19780), (1265, 16684), (1892, 11155), (1940, 10879), (1978, 10670), (2134, 9890), (2231, 9460), (2365, 8924), (2530, 8342), (3956, 5335), (4171, 5060), (4268, 4945), (4462, 4730)]