19490625

素因数分解:

$3^4\times 5^5\times 7^1\times {\mathrm{11}}^1$

素因数の和:55

約数の個数: 120

約数和(自身を含む): 45372096

約数和(自身を除く): 25881471

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 27, 33, 35, 45, 55, 63, 75, 77, 81, 99, 105, 125, 135, 165, 175, 189, 225, 231, 275, 297, 315, 375, 385, 405, 495, 525, 567, 625, 675, 693, 825, 875, 891, 945, 1125, 1155, 1375, 1485, 1575, 1875, 1925, 2025, 2079, 2475, 2625, 2835, 3125, 3375, 3465, 4125, 4375, 4455, 4725, 5625, 5775, 6237, 6875, 7425, 7875, 9375, 9625, 10125, 10395, 12375, 13125, 14175, 16875, 17325, 20625, 21875, 22275, 23625, 28125, 28875, 31185, 34375, 37125, 39375, 48125, 50625, 51975, 61875, 65625, 70875, 84375, 86625, 103125, 111375, 118125, 144375, 155925, 185625, 196875, 240625, 253125, 259875, 309375, 354375, 433125, 556875, 590625, 721875, 779625, 928125, 1299375, 1771875, 2165625, 2784375, 3898125, 6496875, 19490625]

約数ペア:

[(1, 19490625), (3, 6496875), (5, 3898125), (7, 2784375), (9, 2165625), (11, 1771875), (15, 1299375), (21, 928125), (25, 779625), (27, 721875), (33, 590625), (35, 556875), (45, 433125), (55, 354375), (63, 309375), (75, 259875), (77, 253125), (81, 240625), (99, 196875), (105, 185625), (125, 155925), (135, 144375), (165, 118125), (175, 111375), (189, 103125), (225, 86625), (231, 84375), (275, 70875), (297, 65625), (315, 61875), (375, 51975), (385, 50625), (405, 48125), (495, 39375), (525, 37125), (567, 34375), (625, 31185), (675, 28875), (693, 28125), (825, 23625), (875, 22275), (891, 21875), (945, 20625), (1125, 17325), (1155, 16875), (1375, 14175), (1485, 13125), (1575, 12375), (1875, 10395), (1925, 10125), (2025, 9625), (2079, 9375), (2475, 7875), (2625, 7425), (2835, 6875), (3125, 6237), (3375, 5775), (3465, 5625), (4125, 4725), (4375, 4455)]