19855455

素因数分解:

$3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 12803745

約数列:

[1, 3, 5, 15, 89, 107, 139, 267, 321, 417, 445, 535, 695, 1335, 1605, 2085, 9523, 12371, 14873, 28569, 37113, 44619, 47615, 61855, 74365, 142845, 185565, 223095, 1323697, 3971091, 6618485, 19855455]

約数ペア:

[(1, 19855455), (3, 6618485), (5, 3971091), (15, 1323697), (89, 223095), (107, 185565), (139, 142845), (267, 74365), (321, 61855), (417, 47615), (445, 44619), (535, 37113), (695, 28569), (1335, 14873), (1605, 12371), (2085, 9523)]