20672505

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:151

約数の個数: 96

約数和(自身を含む): 44328960

約数和(自身を除く): 23656455

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 31, 35, 45, 63, 73, 87, 93, 105, 145, 155, 203, 217, 219, 261, 279, 315, 365, 435, 465, 511, 609, 651, 657, 899, 1015, 1085, 1095, 1305, 1395, 1533, 1827, 1953, 2117, 2263, 2555, 2697, 3045, 3255, 3285, 4495, 4599, 6293, 6351, 6789, 7665, 8091, 9135, 9765, 10585, 11315, 13485, 14819, 15841, 18879, 19053, 20367, 22995, 31465, 31755, 33945, 40455, 44457, 47523, 56637, 65627, 74095, 79205, 94395, 95265, 101835, 133371, 142569, 196881, 222285, 237615, 283185, 328135, 459389, 590643, 666855, 712845, 984405, 1378167, 2296945, 2953215, 4134501, 6890835, 20672505]

約数ペア:

[(1, 20672505), (3, 6890835), (5, 4134501), (7, 2953215), (9, 2296945), (15, 1378167), (21, 984405), (29, 712845), (31, 666855), (35, 590643), (45, 459389), (63, 328135), (73, 283185), (87, 237615), (93, 222285), (105, 196881), (145, 142569), (155, 133371), (203, 101835), (217, 95265), (219, 94395), (261, 79205), (279, 74095), (315, 65627), (365, 56637), (435, 47523), (465, 44457), (511, 40455), (609, 33945), (651, 31755), (657, 31465), (899, 22995), (1015, 20367), (1085, 19053), (1095, 18879), (1305, 15841), (1395, 14819), (1533, 13485), (1827, 11315), (1953, 10585), (2117, 9765), (2263, 9135), (2555, 8091), (2697, 7665), (3045, 6789), (3255, 6351), (3285, 6293), (4495, 4599)]