638854125

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:328

約数の個数: 128

約数和(自身を含む): 1328710656

約数和(自身を除く): 689856531

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 65, 75, 91, 97, 105, 125, 175, 193, 195, 273, 291, 325, 375, 455, 485, 525, 579, 679, 875, 965, 975, 1261, 1351, 1365, 1455, 1625, 2037, 2275, 2425, 2509, 2625, 2895, 3395, 3783, 4053, 4825, 4875, 6305, 6755, 6825, 7275, 7527, 8827, 10185, 11375, 12125, 12545, 14475, 16975, 17563, 18721, 18915, 20265, 24125, 26481, 31525, 33775, 34125, 36375, 37635, 44135, 50925, 52689, 56163, 62725, 72375, 84875, 87815, 93605, 94575, 101325, 131047, 132405, 157625, 168875, 188175, 220675, 243373, 254625, 263445, 280815, 313625, 393141, 439075, 468025, 472875, 506625, 655235, 662025, 730119, 940875, 1103375, 1216865, 1317225, 1404075, 1703611, 1965705, 2195375, 2340125, 3276175, 3310125, 3650595, 5110833, 6084325, 6586125, 7020375, 8518055, 9828525, 16380875, 18252975, 25554165, 30421625, 42590275, 49142625, 91264875, 127770825, 212951375, 638854125]

約数ペア:

[(1, 638854125), (3, 212951375), (5, 127770825), (7, 91264875), (13, 49142625), (15, 42590275), (21, 30421625), (25, 25554165), (35, 18252975), (39, 16380875), (65, 9828525), (75, 8518055), (91, 7020375), (97, 6586125), (105, 6084325), (125, 5110833), (175, 3650595), (193, 3310125), (195, 3276175), (273, 2340125), (291, 2195375), (325, 1965705), (375, 1703611), (455, 1404075), (485, 1317225), (525, 1216865), (579, 1103375), (679, 940875), (875, 730119), (965, 662025), (975, 655235), (1261, 506625), (1351, 472875), (1365, 468025), (1455, 439075), (1625, 393141), (2037, 313625), (2275, 280815), (2425, 263445), (2509, 254625), (2625, 243373), (2895, 220675), (3395, 188175), (3783, 168875), (4053, 157625), (4825, 132405), (4875, 131047), (6305, 101325), (6755, 94575), (6825, 93605), (7275, 87815), (7527, 84875), (8827, 72375), (10185, 62725), (11375, 56163), (12125, 52689), (12545, 50925), (14475, 44135), (16975, 37635), (17563, 36375), (18721, 34125), (18915, 33775), (20265, 31525), (24125, 26481)]