21000930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 52876800

約数和(自身を除く): 31875870

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 101, 145, 174, 202, 239, 290, 303, 435, 478, 505, 606, 717, 870, 1010, 1195, 1434, 1515, 2390, 2929, 3030, 3585, 5858, 6931, 7170, 8787, 13862, 14645, 17574, 20793, 24139, 29290, 34655, 41586, 43935, 48278, 69310, 72417, 87870, 103965, 120695, 144834, 207930, 241390, 362085, 700031, 724170, 1400062, 2100093, 3500155, 4200186, 7000310, 10500465, 21000930]

約数ペア:

[(1, 21000930), (2, 10500465), (3, 7000310), (5, 4200186), (6, 3500155), (10, 2100093), (15, 1400062), (29, 724170), (30, 700031), (58, 362085), (87, 241390), (101, 207930), (145, 144834), (174, 120695), (202, 103965), (239, 87870), (290, 72417), (303, 69310), (435, 48278), (478, 43935), (505, 41586), (606, 34655), (717, 29290), (870, 24139), (1010, 20793), (1195, 17574), (1434, 14645), (1515, 13862), (2390, 8787), (2929, 7170), (3030, 6931), (3585, 5858)]