20923320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{131}}^1$

素因数の和:178

約数の個数: 128

約数和(自身を含む): 69569280

約数和(自身を除く): 48645960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 121, 131, 132, 165, 220, 242, 262, 264, 330, 363, 393, 440, 484, 524, 605, 655, 660, 726, 786, 968, 1048, 1210, 1310, 1320, 1331, 1441, 1452, 1572, 1815, 1965, 2420, 2620, 2662, 2882, 2904, 3144, 3630, 3930, 3993, 4323, 4840, 5240, 5324, 5764, 6655, 7205, 7260, 7860, 7986, 8646, 10648, 11528, 13310, 14410, 14520, 15720, 15851, 15972, 17292, 19965, 21615, 26620, 28820, 31702, 31944, 34584, 39930, 43230, 47553, 53240, 57640, 63404, 79255, 79860, 86460, 95106, 126808, 158510, 159720, 172920, 174361, 190212, 237765, 317020, 348722, 380424, 475530, 523083, 634040, 697444, 871805, 951060, 1046166, 1394888, 1743610, 1902120, 2092332, 2615415, 3487220, 4184664, 5230830, 6974440, 10461660, 20923320]

約数ペア:

[(1, 20923320), (2, 10461660), (3, 6974440), (4, 5230830), (5, 4184664), (6, 3487220), (8, 2615415), (10, 2092332), (11, 1902120), (12, 1743610), (15, 1394888), (20, 1046166), (22, 951060), (24, 871805), (30, 697444), (33, 634040), (40, 523083), (44, 475530), (55, 380424), (60, 348722), (66, 317020), (88, 237765), (110, 190212), (120, 174361), (121, 172920), (131, 159720), (132, 158510), (165, 126808), (220, 95106), (242, 86460), (262, 79860), (264, 79255), (330, 63404), (363, 57640), (393, 53240), (440, 47553), (484, 43230), (524, 39930), (605, 34584), (655, 31944), (660, 31702), (726, 28820), (786, 26620), (968, 21615), (1048, 19965), (1210, 17292), (1310, 15972), (1320, 15851), (1331, 15720), (1441, 14520), (1452, 14410), (1572, 13310), (1815, 11528), (1965, 10648), (2420, 8646), (2620, 7986), (2662, 7860), (2882, 7260), (2904, 7205), (3144, 6655), (3630, 5764), (3930, 5324), (3993, 5240), (4323, 4840)]