20786723980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{541}}^1\times {\mathrm{174649}}^1$

素因数の和:175210

約数の個数: 48

約数和(自身を含む): 47708791200

約数和(自身を除く): 26922067220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 541, 1082, 2164, 2705, 5410, 5951, 10820, 11902, 23804, 29755, 59510, 119020, 174649, 349298, 698596, 873245, 1746490, 1921139, 3492980, 3842278, 7684556, 9605695, 19211390, 38422780, 94485109, 188970218, 377940436, 472425545, 944851090, 1039336199, 1889702180, 2078672398, 4157344796, 5196680995, 10393361990, 20786723980]

約数ペア:

[(1, 20786723980), (2, 10393361990), (4, 5196680995), (5, 4157344796), (10, 2078672398), (11, 1889702180), (20, 1039336199), (22, 944851090), (44, 472425545), (55, 377940436), (110, 188970218), (220, 94485109), (541, 38422780), (1082, 19211390), (2164, 9605695), (2705, 7684556), (5410, 3842278), (5951, 3492980), (10820, 1921139), (11902, 1746490), (23804, 873245), (29755, 698596), (59510, 349298), (119020, 174649)]