20002060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4049}}^1$

素因数の和:4090

約数の個数: 48

約数和(自身を含む): 47628000

約数和(自身を除く): 27625940

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4049, 4940, 8098, 16196, 20245, 40490, 52637, 76931, 80980, 105274, 153862, 210548, 263185, 307724, 384655, 526370, 769310, 1000103, 1052740, 1538620, 2000206, 4000412, 5000515, 10001030, 20002060]

約数ペア:

[(1, 20002060), (2, 10001030), (4, 5000515), (5, 4000412), (10, 2000206), (13, 1538620), (19, 1052740), (20, 1000103), (26, 769310), (38, 526370), (52, 384655), (65, 307724), (76, 263185), (95, 210548), (130, 153862), (190, 105274), (247, 80980), (260, 76931), (380, 52637), (494, 40490), (988, 20245), (1235, 16196), (2470, 8098), (4049, 4940)]