18915971375

素因数分解:

$5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:394

約数の個数: 128

約数和(自身を含む): 29185228800

約数和(自身を除く): 10269257425

約数列:

[1, 5, 7, 25, 29, 31, 35, 125, 139, 145, 155, 173, 175, 203, 217, 695, 725, 775, 865, 875, 899, 973, 1015, 1085, 1211, 3475, 3625, 3875, 4031, 4309, 4325, 4495, 4865, 5017, 5075, 5363, 5425, 6055, 6293, 17375, 20155, 21545, 21625, 22475, 24047, 24325, 25085, 25375, 26815, 27125, 28217, 30163, 30275, 31465, 35119, 37541, 100775, 107725, 112375, 120235, 121625, 124961, 125425, 134075, 141085, 150815, 151375, 155527, 157325, 168329, 175595, 187705, 503875, 538625, 601175, 624805, 627125, 670375, 697363, 705425, 745457, 754075, 777635, 786625, 841645, 874727, 877975, 938525, 1088689, 3005875, 3124025, 3486815, 3527125, 3727285, 3770375, 3888175, 4208225, 4373635, 4389875, 4692625, 4881541, 5218199, 5443445, 15620125, 17434075, 18636425, 19440875, 21041125, 21618253, 21868175, 24407705, 26090995, 27217225, 87170375, 93182125, 108091265, 109340875, 122038525, 130454975, 136086125, 151327771, 540456325, 610192625, 652274875, 756638855, 2702281625, 3783194275, 18915971375]

約数ペア:

[(1, 18915971375), (5, 3783194275), (7, 2702281625), (25, 756638855), (29, 652274875), (31, 610192625), (35, 540456325), (125, 151327771), (139, 136086125), (145, 130454975), (155, 122038525), (173, 109340875), (175, 108091265), (203, 93182125), (217, 87170375), (695, 27217225), (725, 26090995), (775, 24407705), (865, 21868175), (875, 21618253), (899, 21041125), (973, 19440875), (1015, 18636425), (1085, 17434075), (1211, 15620125), (3475, 5443445), (3625, 5218199), (3875, 4881541), (4031, 4692625), (4309, 4389875), (4325, 4373635), (4495, 4208225), (4865, 3888175), (5017, 3770375), (5075, 3727285), (5363, 3527125), (5425, 3486815), (6055, 3124025), (6293, 3005875), (17375, 1088689), (20155, 938525), (21545, 877975), (21625, 874727), (22475, 841645), (24047, 786625), (24325, 777635), (25085, 754075), (25375, 745457), (26815, 705425), (27125, 697363), (28217, 670375), (30163, 627125), (30275, 624805), (31465, 601175), (35119, 538625), (37541, 503875), (100775, 187705), (107725, 175595), (112375, 168329), (120235, 157325), (121625, 155527), (124961, 151375), (125425, 150815), (134075, 141085)]