18740205

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{131}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 37930464

約数和(自身を除く): 19190259

約数列:

[1, 3, 5, 9, 11, 15, 17, 33, 45, 51, 55, 85, 99, 131, 153, 165, 187, 255, 289, 393, 495, 561, 655, 765, 867, 935, 1179, 1441, 1445, 1683, 1965, 2227, 2601, 2805, 3179, 4323, 4335, 5895, 6681, 7205, 8415, 9537, 11135, 12969, 13005, 15895, 20043, 21615, 24497, 28611, 33405, 37859, 47685, 64845, 73491, 100215, 113577, 122485, 143055, 189295, 220473, 340731, 367455, 416449, 567885, 1102365, 1249347, 1703655, 2082245, 3748041, 6246735, 18740205]

約数ペア:

[(1, 18740205), (3, 6246735), (5, 3748041), (9, 2082245), (11, 1703655), (15, 1249347), (17, 1102365), (33, 567885), (45, 416449), (51, 367455), (55, 340731), (85, 220473), (99, 189295), (131, 143055), (153, 122485), (165, 113577), (187, 100215), (255, 73491), (289, 64845), (393, 47685), (495, 37859), (561, 33405), (655, 28611), (765, 24497), (867, 21615), (935, 20043), (1179, 15895), (1441, 13005), (1445, 12969), (1683, 11135), (1965, 9537), (2227, 8415), (2601, 7205), (2805, 6681), (3179, 5895), (4323, 4335)]