21042588

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{631}}^1$

素因数の和:1042

約数の個数: 48

約数和(自身を含む): 56344064

約数和(自身を除く): 35301476

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 397, 631, 794, 1191, 1262, 1588, 1893, 2382, 2524, 2779, 3786, 4417, 4764, 5558, 7572, 8337, 8834, 11116, 13251, 16674, 17668, 26502, 33348, 53004, 250507, 501014, 751521, 1002028, 1503042, 1753549, 3006084, 3507098, 5260647, 7014196, 10521294, 21042588]

約数ペア:

[(1, 21042588), (2, 10521294), (3, 7014196), (4, 5260647), (6, 3507098), (7, 3006084), (12, 1753549), (14, 1503042), (21, 1002028), (28, 751521), (42, 501014), (84, 250507), (397, 53004), (631, 33348), (794, 26502), (1191, 17668), (1262, 16674), (1588, 13251), (1893, 11116), (2382, 8834), (2524, 8337), (2779, 7572), (3786, 5558), (4417, 4764)]