21643804

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{613}}^1$

素因数の和:734

約数の個数: 48

約数和(自身を含む): 47174848

約数和(自身を除く): 25531044

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 97, 182, 194, 364, 388, 613, 679, 1226, 1261, 1358, 2452, 2522, 2716, 4291, 5044, 7969, 8582, 8827, 15938, 17164, 17654, 31876, 35308, 55783, 59461, 111566, 118922, 223132, 237844, 416227, 772993, 832454, 1545986, 1664908, 3091972, 5410951, 10821902, 21643804]

約数ペア:

[(1, 21643804), (2, 10821902), (4, 5410951), (7, 3091972), (13, 1664908), (14, 1545986), (26, 832454), (28, 772993), (52, 416227), (91, 237844), (97, 223132), (182, 118922), (194, 111566), (364, 59461), (388, 55783), (613, 35308), (679, 31876), (1226, 17654), (1261, 17164), (1358, 15938), (2452, 8827), (2522, 8582), (2716, 7969), (4291, 5044)]