20118105

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 41664000

約数和(自身を除く): 21545895

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 61, 63, 105, 135, 183, 189, 305, 315, 349, 427, 549, 915, 945, 1047, 1281, 1647, 1745, 2135, 2443, 2745, 3141, 3843, 5235, 6405, 7329, 8235, 9423, 11529, 12215, 15705, 19215, 21289, 21987, 36645, 47115, 57645, 63867, 65961, 106445, 109935, 149023, 191601, 319335, 329805, 447069, 574803, 745115, 958005, 1341207, 2235345, 2874015, 4023621, 6706035, 20118105]

約数ペア:

[(1, 20118105), (3, 6706035), (5, 4023621), (7, 2874015), (9, 2235345), (15, 1341207), (21, 958005), (27, 745115), (35, 574803), (45, 447069), (61, 329805), (63, 319335), (105, 191601), (135, 149023), (183, 109935), (189, 106445), (305, 65961), (315, 63867), (349, 57645), (427, 47115), (549, 36645), (915, 21987), (945, 21289), (1047, 19215), (1281, 15705), (1647, 12215), (1745, 11529), (2135, 9423), (2443, 8235), (2745, 7329), (3141, 6405), (3843, 5235)]