20942740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{311}}^1$

素因数の和:377

約数の個数: 96

約数和(自身を含む): 55770624

約数和(自身を除く): 34827884

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 37, 52, 65, 70, 74, 91, 130, 140, 148, 182, 185, 259, 260, 311, 364, 370, 455, 481, 518, 622, 740, 910, 962, 1036, 1244, 1295, 1555, 1820, 1924, 2177, 2405, 2590, 3110, 3367, 4043, 4354, 4810, 5180, 6220, 6734, 8086, 8708, 9620, 10885, 11507, 13468, 16172, 16835, 20215, 21770, 23014, 28301, 33670, 40430, 43540, 46028, 56602, 57535, 67340, 80549, 80860, 113204, 115070, 141505, 149591, 161098, 230140, 283010, 299182, 322196, 402745, 566020, 598364, 747955, 805490, 1047137, 1495910, 1610980, 2094274, 2991820, 4188548, 5235685, 10471370, 20942740]

約数ペア:

[(1, 20942740), (2, 10471370), (4, 5235685), (5, 4188548), (7, 2991820), (10, 2094274), (13, 1610980), (14, 1495910), (20, 1047137), (26, 805490), (28, 747955), (35, 598364), (37, 566020), (52, 402745), (65, 322196), (70, 299182), (74, 283010), (91, 230140), (130, 161098), (140, 149591), (148, 141505), (182, 115070), (185, 113204), (259, 80860), (260, 80549), (311, 67340), (364, 57535), (370, 56602), (455, 46028), (481, 43540), (518, 40430), (622, 33670), (740, 28301), (910, 23014), (962, 21770), (1036, 20215), (1244, 16835), (1295, 16172), (1555, 13468), (1820, 11507), (1924, 10885), (2177, 9620), (2405, 8708), (2590, 8086), (3110, 6734), (3367, 6220), (4043, 5180), (4354, 4810)]