18766540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{811}}^1$

素因数の和:922

約数の個数: 48

約数和(自身を含む): 42971040

約数和(自身を除く): 24204500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 811, 890, 1157, 1622, 1780, 2314, 3244, 4055, 4628, 5785, 8110, 10543, 11570, 16220, 21086, 23140, 42172, 52715, 72179, 105430, 144358, 210860, 288716, 360895, 721790, 938327, 1443580, 1876654, 3753308, 4691635, 9383270, 18766540]

約数ペア:

[(1, 18766540), (2, 9383270), (4, 4691635), (5, 3753308), (10, 1876654), (13, 1443580), (20, 938327), (26, 721790), (52, 360895), (65, 288716), (89, 210860), (130, 144358), (178, 105430), (260, 72179), (356, 52715), (445, 42172), (811, 23140), (890, 21086), (1157, 16220), (1622, 11570), (1780, 10543), (2314, 8110), (3244, 5785), (4055, 4628)]