28957775

素因数分解:

$5^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{307}}^1$

素因数の和:349

約数の個数: 48

約数和(自身を含む): 45830400

約数和(自身を除く): 16872625

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 175, 245, 275, 307, 343, 385, 539, 1225, 1535, 1715, 1925, 2149, 2695, 3377, 3773, 7675, 8575, 10745, 13475, 15043, 16885, 18865, 23639, 53725, 75215, 84425, 94325, 105301, 118195, 165473, 376075, 526505, 590975, 827365, 1158311, 2632525, 4136825, 5791555, 28957775]

約数ペア:

[(1, 28957775), (5, 5791555), (7, 4136825), (11, 2632525), (25, 1158311), (35, 827365), (49, 590975), (55, 526505), (77, 376075), (175, 165473), (245, 118195), (275, 105301), (307, 94325), (343, 84425), (385, 75215), (539, 53725), (1225, 23639), (1535, 18865), (1715, 16885), (1925, 15043), (2149, 13475), (2695, 10745), (3377, 8575), (3773, 7675)]