21395518930

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1\times {\mathrm{208513}}^1$

素因数の和:208882

約数の個数: 32

約数和(自身を含む): 39874549248

約数和(自身を除く): 18479030318

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 331, 662, 1655, 3310, 10261, 20522, 51305, 102610, 208513, 417026, 1042565, 2085130, 6463903, 12927806, 32319515, 64639030, 69017803, 138035606, 345089015, 690178030, 2139551893, 4279103786, 10697759465, 21395518930]

約数ペア:

[(1, 21395518930), (2, 10697759465), (5, 4279103786), (10, 2139551893), (31, 690178030), (62, 345089015), (155, 138035606), (310, 69017803), (331, 64639030), (662, 32319515), (1655, 12927806), (3310, 6463903), (10261, 2085130), (20522, 1042565), (51305, 417026), (102610, 208513)]