28173775

素因数分解:

$5^2\times 7^2\times {\mathrm{109}}^1\times {\mathrm{211}}^1$

素因数の和:344

約数の個数: 36

約数和(自身を含む): 41206440

約数和(自身を除く): 13032665

約数列:

[1, 5, 7, 25, 35, 49, 109, 175, 211, 245, 545, 763, 1055, 1225, 1477, 2725, 3815, 5275, 5341, 7385, 10339, 19075, 22999, 26705, 36925, 51695, 114995, 133525, 160993, 258475, 574975, 804965, 1126951, 4024825, 5634755, 28173775]

約数ペア:

[(1, 28173775), (5, 5634755), (7, 4024825), (25, 1126951), (35, 804965), (49, 574975), (109, 258475), (175, 160993), (211, 133525), (245, 114995), (545, 51695), (763, 36925), (1055, 26705), (1225, 22999), (1477, 19075), (2725, 10339), (3815, 7385), (5275, 5341)]