28413385

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{811}}^1$

素因数の和:854

約数の個数: 48

約数和(自身を含む): 46654272

約数和(自身を除く): 18240887

約数列:

[1, 5, 7, 11, 13, 35, 49, 55, 65, 77, 91, 143, 245, 385, 455, 539, 637, 715, 811, 1001, 2695, 3185, 4055, 5005, 5677, 7007, 8921, 10543, 28385, 35035, 39739, 44605, 52715, 62447, 73801, 115973, 198695, 312235, 369005, 437129, 516607, 579865, 811811, 2185645, 2583035, 4059055, 5682677, 28413385]

約数ペア:

[(1, 28413385), (5, 5682677), (7, 4059055), (11, 2583035), (13, 2185645), (35, 811811), (49, 579865), (55, 516607), (65, 437129), (77, 369005), (91, 312235), (143, 198695), (245, 115973), (385, 73801), (455, 62447), (539, 52715), (637, 44605), (715, 39739), (811, 35035), (1001, 28385), (2695, 10543), (3185, 8921), (4055, 7007), (5005, 5677)]