20541885

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 41126400

約数和(自身を除く): 20584515

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 101, 105, 149, 195, 273, 303, 447, 455, 505, 707, 745, 1043, 1313, 1365, 1515, 1937, 2121, 2235, 3129, 3535, 3939, 5215, 5811, 6565, 9191, 9685, 10605, 13559, 15049, 15645, 19695, 27573, 29055, 40677, 45147, 45955, 67795, 75245, 105343, 137865, 195637, 203385, 225735, 316029, 526715, 586911, 978185, 1369459, 1580145, 2934555, 4108377, 6847295, 20541885]

約数ペア:

[(1, 20541885), (3, 6847295), (5, 4108377), (7, 2934555), (13, 1580145), (15, 1369459), (21, 978185), (35, 586911), (39, 526715), (65, 316029), (91, 225735), (101, 203385), (105, 195637), (149, 137865), (195, 105343), (273, 75245), (303, 67795), (447, 45955), (455, 45147), (505, 40677), (707, 29055), (745, 27573), (1043, 19695), (1313, 15645), (1365, 15049), (1515, 13559), (1937, 10605), (2121, 9685), (2235, 9191), (3129, 6565), (3535, 5811), (3939, 5215)]