16980225

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 29968320

約数和(自身を除く): 12988095

約数列:

[1, 3, 5, 15, 25, 29, 37, 75, 87, 111, 145, 185, 211, 435, 555, 633, 725, 925, 1055, 1073, 2175, 2775, 3165, 3219, 5275, 5365, 6119, 7807, 15825, 16095, 18357, 23421, 26825, 30595, 39035, 80475, 91785, 117105, 152975, 195175, 226403, 458925, 585525, 679209, 1132015, 3396045, 5660075, 16980225]

約数ペア:

[(1, 16980225), (3, 5660075), (5, 3396045), (15, 1132015), (25, 679209), (29, 585525), (37, 458925), (75, 226403), (87, 195175), (111, 152975), (145, 117105), (185, 91785), (211, 80475), (435, 39035), (555, 30595), (633, 26825), (725, 23421), (925, 18357), (1055, 16095), (1073, 15825), (2175, 7807), (2775, 6119), (3165, 5365), (3219, 5275)]