21759255

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1031}}^1$

素因数の和:1116

約数の個数: 48

約数和(自身を含む): 43789824

約数和(自身を除く): 22030569

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 67, 105, 201, 315, 335, 469, 603, 1005, 1031, 1407, 2345, 3015, 3093, 4221, 5155, 7035, 7217, 9279, 15465, 21105, 21651, 36085, 46395, 64953, 69077, 108255, 207231, 324765, 345385, 483539, 621693, 1036155, 1450617, 2417695, 3108465, 4351851, 7253085, 21759255]

約数ペア:

[(1, 21759255), (3, 7253085), (5, 4351851), (7, 3108465), (9, 2417695), (15, 1450617), (21, 1036155), (35, 621693), (45, 483539), (63, 345385), (67, 324765), (105, 207231), (201, 108255), (315, 69077), (335, 64953), (469, 46395), (603, 36085), (1005, 21651), (1031, 21105), (1407, 15465), (2345, 9279), (3015, 7217), (3093, 7035), (4221, 5155)]