20637540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1489}}^1$

素因数の和:1522

約数の個数: 144

約数和(自身を含む): 78099840

約数和(自身を除く): 57462300

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 126, 132, 140, 154, 165, 180, 198, 210, 220, 231, 252, 308, 315, 330, 385, 396, 420, 462, 495, 630, 660, 693, 770, 924, 990, 1155, 1260, 1386, 1489, 1540, 1980, 2310, 2772, 2978, 3465, 4467, 4620, 5956, 6930, 7445, 8934, 10423, 13401, 13860, 14890, 16379, 17868, 20846, 22335, 26802, 29780, 31269, 32758, 41692, 44670, 49137, 52115, 53604, 62538, 65516, 67005, 81895, 89340, 93807, 98274, 104230, 114653, 125076, 134010, 147411, 156345, 163790, 187614, 196548, 208460, 229306, 245685, 268020, 294822, 312690, 327580, 343959, 375228, 458612, 469035, 491370, 573265, 589644, 625380, 687918, 737055, 938070, 982740, 1031877, 1146530, 1375836, 1474110, 1719795, 1876140, 2063754, 2293060, 2948220, 3439590, 4127508, 5159385, 6879180, 10318770, 20637540]

約数ペア:

[(1, 20637540), (2, 10318770), (3, 6879180), (4, 5159385), (5, 4127508), (6, 3439590), (7, 2948220), (9, 2293060), (10, 2063754), (11, 1876140), (12, 1719795), (14, 1474110), (15, 1375836), (18, 1146530), (20, 1031877), (21, 982740), (22, 938070), (28, 737055), (30, 687918), (33, 625380), (35, 589644), (36, 573265), (42, 491370), (44, 469035), (45, 458612), (55, 375228), (60, 343959), (63, 327580), (66, 312690), (70, 294822), (77, 268020), (84, 245685), (90, 229306), (99, 208460), (105, 196548), (110, 187614), (126, 163790), (132, 156345), (140, 147411), (154, 134010), (165, 125076), (180, 114653), (198, 104230), (210, 98274), (220, 93807), (231, 89340), (252, 81895), (308, 67005), (315, 65516), (330, 62538), (385, 53604), (396, 52115), (420, 49137), (462, 44670), (495, 41692), (630, 32758), (660, 31269), (693, 29780), (770, 26802), (924, 22335), (990, 20846), (1155, 17868), (1260, 16379), (1386, 14890), (1489, 13860), (1540, 13401), (1980, 10423), (2310, 8934), (2772, 7445), (2978, 6930), (3465, 5956), (4467, 4620)]