19702375

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:145

約数の個数: 64

約数和(自身を含む): 32348160

約数和(自身を除く): 12645785

約数列:

[1, 5, 7, 11, 23, 25, 35, 55, 77, 89, 115, 125, 161, 175, 253, 275, 385, 445, 575, 623, 805, 875, 979, 1265, 1375, 1771, 1925, 2047, 2225, 2875, 3115, 4025, 4895, 6325, 6853, 8855, 9625, 10235, 11125, 14329, 15575, 20125, 22517, 24475, 31625, 34265, 44275, 51175, 71645, 77875, 112585, 122375, 157619, 171325, 221375, 255875, 358225, 562925, 788095, 856625, 1791125, 2814625, 3940475, 19702375]

約数ペア:

[(1, 19702375), (5, 3940475), (7, 2814625), (11, 1791125), (23, 856625), (25, 788095), (35, 562925), (55, 358225), (77, 255875), (89, 221375), (115, 171325), (125, 157619), (161, 122375), (175, 112585), (253, 77875), (275, 71645), (385, 51175), (445, 44275), (575, 34265), (623, 31625), (805, 24475), (875, 22517), (979, 20125), (1265, 15575), (1375, 14329), (1771, 11125), (1925, 10235), (2047, 9625), (2225, 8855), (2875, 6853), (3115, 6325), (4025, 4895)]