21022960

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:231

約数の個数: 120

約数和(自身を含む): 59031936

約数和(自身を除く): 38008976

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 173, 196, 217, 245, 248, 280, 310, 346, 392, 434, 490, 496, 560, 620, 692, 784, 865, 868, 980, 1085, 1211, 1240, 1384, 1519, 1730, 1736, 1960, 2170, 2422, 2480, 2768, 3038, 3460, 3472, 3920, 4340, 4844, 5363, 6055, 6076, 6920, 7595, 8477, 8680, 9688, 10726, 12110, 12152, 13840, 15190, 16954, 17360, 19376, 21452, 24220, 24304, 26815, 30380, 33908, 37541, 42385, 42904, 48440, 53630, 60760, 67816, 75082, 84770, 85808, 96880, 107260, 121520, 135632, 150164, 169540, 187705, 214520, 262787, 300328, 339080, 375410, 429040, 525574, 600656, 678160, 750820, 1051148, 1313935, 1501640, 2102296, 2627870, 3003280, 4204592, 5255740, 10511480, 21022960]

約数ペア:

[(1, 21022960), (2, 10511480), (4, 5255740), (5, 4204592), (7, 3003280), (8, 2627870), (10, 2102296), (14, 1501640), (16, 1313935), (20, 1051148), (28, 750820), (31, 678160), (35, 600656), (40, 525574), (49, 429040), (56, 375410), (62, 339080), (70, 300328), (80, 262787), (98, 214520), (112, 187705), (124, 169540), (140, 150164), (155, 135632), (173, 121520), (196, 107260), (217, 96880), (245, 85808), (248, 84770), (280, 75082), (310, 67816), (346, 60760), (392, 53630), (434, 48440), (490, 42904), (496, 42385), (560, 37541), (620, 33908), (692, 30380), (784, 26815), (865, 24304), (868, 24220), (980, 21452), (1085, 19376), (1211, 17360), (1240, 16954), (1384, 15190), (1519, 13840), (1730, 12152), (1736, 12110), (1960, 10726), (2170, 9688), (2422, 8680), (2480, 8477), (2768, 7595), (3038, 6920), (3460, 6076), (3472, 6055), (3920, 5363), (4340, 4844)]