16661925

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 34819200

約数和(自身を除く): 18157275

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 71, 75, 105, 149, 175, 213, 225, 315, 355, 447, 497, 525, 639, 745, 1043, 1065, 1341, 1491, 1575, 1775, 2235, 2485, 3129, 3195, 3725, 4473, 5215, 5325, 6705, 7455, 9387, 10579, 11175, 12425, 15645, 15975, 22365, 26075, 31737, 33525, 37275, 46935, 52895, 74053, 78225, 95211, 111825, 158685, 222159, 234675, 264475, 370265, 476055, 666477, 793425, 1110795, 1851325, 2380275, 3332385, 5553975, 16661925]

約数ペア:

[(1, 16661925), (3, 5553975), (5, 3332385), (7, 2380275), (9, 1851325), (15, 1110795), (21, 793425), (25, 666477), (35, 476055), (45, 370265), (63, 264475), (71, 234675), (75, 222159), (105, 158685), (149, 111825), (175, 95211), (213, 78225), (225, 74053), (315, 52895), (355, 46935), (447, 37275), (497, 33525), (525, 31737), (639, 26075), (745, 22365), (1043, 15975), (1065, 15645), (1341, 12425), (1491, 11175), (1575, 10579), (1775, 9387), (2235, 7455), (2485, 6705), (3129, 5325), (3195, 5215), (3725, 4473)]