21124330

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{821}}^1$

素因数の和:942

約数の個数: 32

約数和(自身を含む): 39771648

約数和(自身を除く): 18647318

約数列:

[1, 2, 5, 10, 31, 62, 83, 155, 166, 310, 415, 821, 830, 1642, 2573, 4105, 5146, 8210, 12865, 25451, 25730, 50902, 68143, 127255, 136286, 254510, 340715, 681430, 2112433, 4224866, 10562165, 21124330]

約数ペア:

[(1, 21124330), (2, 10562165), (5, 4224866), (10, 2112433), (31, 681430), (62, 340715), (83, 254510), (155, 136286), (166, 127255), (310, 68143), (415, 50902), (821, 25730), (830, 25451), (1642, 12865), (2573, 8210), (4105, 5146)]