81454380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193939}}^1$

素因数の和:193958

約数の個数: 48

約数和(自身を含む): 260655360

約数和(自身を除く): 179200980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 193939, 387878, 581817, 775756, 969695, 1163634, 1357573, 1939390, 2327268, 2715146, 2909085, 3878780, 4072719, 5430292, 5818170, 6787865, 8145438, 11636340, 13575730, 16290876, 20363595, 27151460, 40727190, 81454380]

約数ペア:

[(1, 81454380), (2, 40727190), (3, 27151460), (4, 20363595), (5, 16290876), (6, 13575730), (7, 11636340), (10, 8145438), (12, 6787865), (14, 5818170), (15, 5430292), (20, 4072719), (21, 3878780), (28, 2909085), (30, 2715146), (35, 2327268), (42, 1939390), (60, 1357573), (70, 1163634), (84, 969695), (105, 775756), (140, 581817), (210, 387878), (420, 193939)]