21008889712

素因数分解:

$2^4\times {\mathrm{619}}^1\times {\mathrm{2121253}}^1$

素因数の和:2121880

約数の個数: 20

約数和(自身を含む): 40770501880

約数和(自身を除く): 19761612168

約数列:

[1, 2, 4, 8, 16, 619, 1238, 2476, 4952, 9904, 2121253, 4242506, 8485012, 16970024, 33940048, 1313055607, 2626111214, 5252222428, 10504444856, 21008889712]

約数ペア:

[(1, 21008889712), (2, 10504444856), (4, 5252222428), (8, 2626111214), (16, 1313055607), (619, 33940048), (1238, 16970024), (2476, 8485012), (4952, 4242506), (9904, 2121253)]