21000514845

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{233}}^1\times {\mathrm{1381}}^1$

素因数の和:1870

約数の個数: 64

約数和(自身を含む): 35702035200

約数和(自身を除く): 14701520355

約数列:

[1, 3, 5, 15, 19, 57, 95, 229, 233, 285, 687, 699, 1145, 1165, 1381, 3435, 3495, 4143, 4351, 4427, 6905, 13053, 13281, 20715, 21755, 22135, 26239, 53357, 65265, 66405, 78717, 131195, 160071, 266785, 316249, 321773, 393585, 800355, 948747, 965319, 1013783, 1581245, 1608865, 3041349, 4743735, 4826595, 5068915, 6008731, 6113687, 15206745, 18026193, 18341061, 30043655, 30568435, 73686017, 90130965, 91705305, 221058051, 368430085, 1105290255, 1400034323, 4200102969, 7000171615, 21000514845]

約数ペア:

[(1, 21000514845), (3, 7000171615), (5, 4200102969), (15, 1400034323), (19, 1105290255), (57, 368430085), (95, 221058051), (229, 91705305), (233, 90130965), (285, 73686017), (687, 30568435), (699, 30043655), (1145, 18341061), (1165, 18026193), (1381, 15206745), (3435, 6113687), (3495, 6008731), (4143, 5068915), (4351, 4826595), (4427, 4743735), (6905, 3041349), (13053, 1608865), (13281, 1581245), (20715, 1013783), (21755, 965319), (22135, 948747), (26239, 800355), (53357, 393585), (65265, 321773), (66405, 316249), (78717, 266785), (131195, 160071)]