21583905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 43008000

約数和(自身を除く): 21424095

約数列:

[1, 3, 5, 7, 15, 19, 21, 31, 35, 57, 93, 95, 105, 133, 155, 217, 285, 349, 399, 465, 589, 651, 665, 1047, 1085, 1745, 1767, 1995, 2443, 2945, 3255, 4123, 5235, 6631, 7329, 8835, 10819, 12215, 12369, 19893, 20615, 32457, 33155, 36645, 46417, 54095, 61845, 75733, 99465, 139251, 162285, 205561, 227199, 232085, 378665, 616683, 696255, 1027805, 1135995, 1438927, 3083415, 4316781, 7194635, 21583905]

約数ペア:

[(1, 21583905), (3, 7194635), (5, 4316781), (7, 3083415), (15, 1438927), (19, 1135995), (21, 1027805), (31, 696255), (35, 616683), (57, 378665), (93, 232085), (95, 227199), (105, 205561), (133, 162285), (155, 139251), (217, 99465), (285, 75733), (349, 61845), (399, 54095), (465, 46417), (589, 36645), (651, 33155), (665, 32457), (1047, 20615), (1085, 19893), (1745, 12369), (1767, 12215), (1995, 10819), (2443, 8835), (2945, 7329), (3255, 6631), (4123, 5235)]