20929680

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{709}}^1$

素因数の和:769

約数の個数: 120

約数和(自身を含む): 72104760

約数和(自身を除く): 51175080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 41, 45, 48, 60, 72, 80, 82, 90, 120, 123, 144, 164, 180, 205, 240, 246, 328, 360, 369, 410, 492, 615, 656, 709, 720, 738, 820, 984, 1230, 1418, 1476, 1640, 1845, 1968, 2127, 2460, 2836, 2952, 3280, 3545, 3690, 4254, 4920, 5672, 5904, 6381, 7090, 7380, 8508, 9840, 10635, 11344, 12762, 14180, 14760, 17016, 21270, 25524, 28360, 29069, 29520, 31905, 34032, 42540, 51048, 56720, 58138, 63810, 85080, 87207, 102096, 116276, 127620, 145345, 170160, 174414, 232552, 255240, 261621, 290690, 348828, 436035, 465104, 510480, 523242, 581380, 697656, 872070, 1046484, 1162760, 1308105, 1395312, 1744140, 2092968, 2325520, 2616210, 3488280, 4185936, 5232420, 6976560, 10464840, 20929680]

約数ペア:

[(1, 20929680), (2, 10464840), (3, 6976560), (4, 5232420), (5, 4185936), (6, 3488280), (8, 2616210), (9, 2325520), (10, 2092968), (12, 1744140), (15, 1395312), (16, 1308105), (18, 1162760), (20, 1046484), (24, 872070), (30, 697656), (36, 581380), (40, 523242), (41, 510480), (45, 465104), (48, 436035), (60, 348828), (72, 290690), (80, 261621), (82, 255240), (90, 232552), (120, 174414), (123, 170160), (144, 145345), (164, 127620), (180, 116276), (205, 102096), (240, 87207), (246, 85080), (328, 63810), (360, 58138), (369, 56720), (410, 51048), (492, 42540), (615, 34032), (656, 31905), (709, 29520), (720, 29069), (738, 28360), (820, 25524), (984, 21270), (1230, 17016), (1418, 14760), (1476, 14180), (1640, 12762), (1845, 11344), (1968, 10635), (2127, 9840), (2460, 8508), (2836, 7380), (2952, 7090), (3280, 6381), (3545, 5904), (3690, 5672), (4254, 4920)]