20588920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{641}}^1$

素因数の和:736

約数の個数: 64

約数和(自身を含む): 51308640

約数和(自身を除く): 30719720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 641, 730, 803, 1282, 1460, 1606, 2564, 2920, 3205, 3212, 4015, 5128, 6410, 6424, 7051, 8030, 12820, 14102, 16060, 25640, 28204, 32120, 35255, 46793, 56408, 70510, 93586, 141020, 187172, 233965, 282040, 374344, 467930, 514723, 935860, 1029446, 1871720, 2058892, 2573615, 4117784, 5147230, 10294460, 20588920]

約数ペア:

[(1, 20588920), (2, 10294460), (4, 5147230), (5, 4117784), (8, 2573615), (10, 2058892), (11, 1871720), (20, 1029446), (22, 935860), (40, 514723), (44, 467930), (55, 374344), (73, 282040), (88, 233965), (110, 187172), (146, 141020), (220, 93586), (292, 70510), (365, 56408), (440, 46793), (584, 35255), (641, 32120), (730, 28204), (803, 25640), (1282, 16060), (1460, 14102), (1606, 12820), (2564, 8030), (2920, 7051), (3205, 6424), (3212, 6410), (4015, 5128)]