21453705

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{31}}^1$

素因数の和:88

約数の個数: 96

約数和(自身を含む): 47523840

約数和(自身を除く): 26070135

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 31, 35, 39, 45, 63, 65, 91, 93, 105, 117, 155, 169, 195, 217, 273, 279, 315, 403, 455, 465, 507, 585, 651, 819, 845, 1085, 1183, 1209, 1365, 1395, 1521, 1953, 2015, 2197, 2535, 2821, 3255, 3549, 3627, 4095, 5239, 5915, 6045, 6591, 7605, 8463, 9765, 10647, 10985, 14105, 15379, 15717, 17745, 18135, 19773, 25389, 26195, 32955, 36673, 42315, 46137, 47151, 53235, 68107, 76895, 78585, 98865, 110019, 126945, 138411, 183365, 204321, 230685, 235755, 330057, 340535, 476749, 550095, 612963, 692055, 1021605, 1430247, 1650285, 2383745, 3064815, 4290741, 7151235, 21453705]

約数ペア:

[(1, 21453705), (3, 7151235), (5, 4290741), (7, 3064815), (9, 2383745), (13, 1650285), (15, 1430247), (21, 1021605), (31, 692055), (35, 612963), (39, 550095), (45, 476749), (63, 340535), (65, 330057), (91, 235755), (93, 230685), (105, 204321), (117, 183365), (155, 138411), (169, 126945), (195, 110019), (217, 98865), (273, 78585), (279, 76895), (315, 68107), (403, 53235), (455, 47151), (465, 46137), (507, 42315), (585, 36673), (651, 32955), (819, 26195), (845, 25389), (1085, 19773), (1183, 18135), (1209, 17745), (1365, 15717), (1395, 15379), (1521, 14105), (1953, 10985), (2015, 10647), (2197, 9765), (2535, 8463), (2821, 7605), (3255, 6591), (3549, 6045), (3627, 5915), (4095, 5239)]