20196870640

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4138703}}^1$

素因数の和:4138777

約数の個数: 40

約数和(自身を含む): 47727534528

約数和(自身を除く): 27530663888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 4138703, 8277406, 16554812, 20693515, 33109624, 41387030, 66219248, 82774060, 165548120, 252460883, 331096240, 504921766, 1009843532, 1262304415, 2019687064, 2524608830, 4039374128, 5049217660, 10098435320, 20196870640]

約数ペア:

[(1, 20196870640), (2, 10098435320), (4, 5049217660), (5, 4039374128), (8, 2524608830), (10, 2019687064), (16, 1262304415), (20, 1009843532), (40, 504921766), (61, 331096240), (80, 252460883), (122, 165548120), (244, 82774060), (305, 66219248), (488, 41387030), (610, 33109624), (976, 20693515), (1220, 16554812), (2440, 8277406), (4880, 4138703)]