21119068520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{305719}}^1$

素因数の和:305898

約数の個数: 64

約数和(自身を含む): 52168060800

約数和(自身を除く): 31048992280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 157, 220, 314, 440, 628, 785, 1256, 1570, 1727, 3140, 3454, 6280, 6908, 8635, 13816, 17270, 34540, 69080, 305719, 611438, 1222876, 1528595, 2445752, 3057190, 3362909, 6114380, 6725818, 12228760, 13451636, 16814545, 26903272, 33629090, 47997883, 67258180, 95995766, 134516360, 191991532, 239989415, 383983064, 479978830, 527976713, 959957660, 1055953426, 1919915320, 2111906852, 2639883565, 4223813704, 5279767130, 10559534260, 21119068520]

約数ペア:

[(1, 21119068520), (2, 10559534260), (4, 5279767130), (5, 4223813704), (8, 2639883565), (10, 2111906852), (11, 1919915320), (20, 1055953426), (22, 959957660), (40, 527976713), (44, 479978830), (55, 383983064), (88, 239989415), (110, 191991532), (157, 134516360), (220, 95995766), (314, 67258180), (440, 47997883), (628, 33629090), (785, 26903272), (1256, 16814545), (1570, 13451636), (1727, 12228760), (3140, 6725818), (3454, 6114380), (6280, 3362909), (6908, 3057190), (8635, 2445752), (13816, 1528595), (17270, 1222876), (34540, 611438), (69080, 305719)]