20510685

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:100

約数の個数: 96

約数和(自身を含む): 42163200

約数和(自身を除く): 21652515

約数列:

[1, 3, 5, 9, 13, 15, 27, 29, 31, 39, 45, 65, 87, 93, 117, 135, 145, 155, 169, 195, 261, 279, 351, 377, 403, 435, 465, 507, 585, 783, 837, 845, 899, 1131, 1209, 1305, 1395, 1521, 1755, 1885, 2015, 2535, 2697, 3393, 3627, 3915, 4185, 4495, 4563, 4901, 5239, 5655, 6045, 7605, 8091, 10179, 10881, 11687, 13485, 14703, 15717, 16965, 18135, 22815, 24273, 24505, 26195, 35061, 40455, 44109, 47151, 50895, 54405, 58435, 73515, 78585, 105183, 121365, 132327, 141453, 151931, 175305, 220545, 235755, 315549, 455793, 525915, 661635, 707265, 759655, 1367379, 1577745, 2278965, 4102137, 6836895, 20510685]

約数ペア:

[(1, 20510685), (3, 6836895), (5, 4102137), (9, 2278965), (13, 1577745), (15, 1367379), (27, 759655), (29, 707265), (31, 661635), (39, 525915), (45, 455793), (65, 315549), (87, 235755), (93, 220545), (117, 175305), (135, 151931), (145, 141453), (155, 132327), (169, 121365), (195, 105183), (261, 78585), (279, 73515), (351, 58435), (377, 54405), (403, 50895), (435, 47151), (465, 44109), (507, 40455), (585, 35061), (783, 26195), (837, 24505), (845, 24273), (899, 22815), (1131, 18135), (1209, 16965), (1305, 15717), (1395, 14703), (1521, 13485), (1755, 11687), (1885, 10881), (2015, 10179), (2535, 8091), (2697, 7605), (3393, 6045), (3627, 5655), (3915, 5239), (4185, 4901), (4495, 4563)]