21000228165

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{43889}}^1$

素因数の和:43952

約数の個数: 96

約数和(自身を含む): 43819776000

約数和(自身を除く): 22819547835

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 45, 49, 63, 93, 105, 147, 155, 217, 245, 279, 315, 343, 441, 465, 651, 735, 1029, 1085, 1395, 1519, 1715, 1953, 2205, 3087, 3255, 4557, 5145, 7595, 9765, 10633, 13671, 15435, 22785, 31899, 43889, 53165, 68355, 95697, 131667, 159495, 219445, 307223, 395001, 478485, 658335, 921669, 1360559, 1536115, 1975005, 2150561, 2765007, 4081677, 4608345, 6451683, 6802795, 9523913, 10752805, 12245031, 13825035, 15053927, 19355049, 20408385, 28571739, 32258415, 45161781, 47619565, 61225155, 66667391, 75269635, 85715217, 96775245, 135485343, 142858695, 200002173, 225808905, 333336955, 428576085, 466671737, 600006519, 677426715, 1000010865, 1400015211, 2333358685, 3000032595, 4200045633, 7000076055, 21000228165]

約数ペア:

[(1, 21000228165), (3, 7000076055), (5, 4200045633), (7, 3000032595), (9, 2333358685), (15, 1400015211), (21, 1000010865), (31, 677426715), (35, 600006519), (45, 466671737), (49, 428576085), (63, 333336955), (93, 225808905), (105, 200002173), (147, 142858695), (155, 135485343), (217, 96775245), (245, 85715217), (279, 75269635), (315, 66667391), (343, 61225155), (441, 47619565), (465, 45161781), (651, 32258415), (735, 28571739), (1029, 20408385), (1085, 19355049), (1395, 15053927), (1519, 13825035), (1715, 12245031), (1953, 10752805), (2205, 9523913), (3087, 6802795), (3255, 6451683), (4557, 4608345), (5145, 4081677), (7595, 2765007), (9765, 2150561), (10633, 1975005), (13671, 1536115), (15435, 1360559), (22785, 921669), (31899, 658335), (43889, 478485), (53165, 395001), (68355, 307223), (95697, 219445), (131667, 159495)]