13228720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:238

約数の個数: 80

約数和(自身を含む): 33265728

約数和(自身を除く): 20037008

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 71, 80, 85, 136, 137, 142, 170, 272, 274, 284, 340, 355, 548, 568, 680, 685, 710, 1096, 1136, 1207, 1360, 1370, 1420, 2192, 2329, 2414, 2740, 2840, 4658, 4828, 5480, 5680, 6035, 9316, 9656, 9727, 10960, 11645, 12070, 18632, 19312, 19454, 23290, 24140, 37264, 38908, 46580, 48280, 48635, 77816, 93160, 96560, 97270, 155632, 165359, 186320, 194540, 330718, 389080, 661436, 778160, 826795, 1322872, 1653590, 2645744, 3307180, 6614360, 13228720]

約数ペア:

[(1, 13228720), (2, 6614360), (4, 3307180), (5, 2645744), (8, 1653590), (10, 1322872), (16, 826795), (17, 778160), (20, 661436), (34, 389080), (40, 330718), (68, 194540), (71, 186320), (80, 165359), (85, 155632), (136, 97270), (137, 96560), (142, 93160), (170, 77816), (272, 48635), (274, 48280), (284, 46580), (340, 38908), (355, 37264), (548, 24140), (568, 23290), (680, 19454), (685, 19312), (710, 18632), (1096, 12070), (1136, 11645), (1207, 10960), (1360, 9727), (1370, 9656), (1420, 9316), (2192, 6035), (2329, 5680), (2414, 5480), (2740, 4828), (2840, 4658)]