20944980

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{1847}}^1$

素因数の和:1875

約数の個数: 120

約数和(自身を含む): 75132288

約数和(自身を除く): 54187308

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1847, 1890, 2268, 2835, 3694, 3780, 5541, 5670, 7388, 9235, 11082, 11340, 12929, 16623, 18470, 22164, 25858, 27705, 33246, 36940, 38787, 49869, 51716, 55410, 64645, 66492, 77574, 83115, 99738, 110820, 116361, 129290, 149607, 155148, 166230, 193935, 199476, 232722, 249345, 258580, 299214, 332460, 349083, 387870, 465444, 498690, 581805, 598428, 698166, 748035, 775740, 997380, 1047249, 1163610, 1396332, 1496070, 1745415, 2094498, 2327220, 2992140, 3490830, 4188996, 5236245, 6981660, 10472490, 20944980]

約数ペア:

[(1, 20944980), (2, 10472490), (3, 6981660), (4, 5236245), (5, 4188996), (6, 3490830), (7, 2992140), (9, 2327220), (10, 2094498), (12, 1745415), (14, 1496070), (15, 1396332), (18, 1163610), (20, 1047249), (21, 997380), (27, 775740), (28, 748035), (30, 698166), (35, 598428), (36, 581805), (42, 498690), (45, 465444), (54, 387870), (60, 349083), (63, 332460), (70, 299214), (81, 258580), (84, 249345), (90, 232722), (105, 199476), (108, 193935), (126, 166230), (135, 155148), (140, 149607), (162, 129290), (180, 116361), (189, 110820), (210, 99738), (252, 83115), (270, 77574), (315, 66492), (324, 64645), (378, 55410), (405, 51716), (420, 49869), (540, 38787), (567, 36940), (630, 33246), (756, 27705), (810, 25858), (945, 22164), (1134, 18470), (1260, 16623), (1620, 12929), (1847, 11340), (1890, 11082), (2268, 9235), (2835, 7388), (3694, 5670), (3780, 5541)]