20821080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{3541}}^1$

素因数の和:3569

約数の個数: 96

約数和(自身を含む): 72681840

約数和(自身を除く): 51860760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 3541, 5880, 7082, 10623, 14164, 17705, 21246, 24787, 28328, 35410, 42492, 49574, 53115, 70820, 74361, 84984, 99148, 106230, 123935, 141640, 148722, 173509, 198296, 212460, 247870, 297444, 347018, 371805, 424920, 495740, 520527, 594888, 694036, 743610, 867545, 991480, 1041054, 1388072, 1487220, 1735090, 2082108, 2602635, 2974440, 3470180, 4164216, 5205270, 6940360, 10410540, 20821080]

約数ペア:

[(1, 20821080), (2, 10410540), (3, 6940360), (4, 5205270), (5, 4164216), (6, 3470180), (7, 2974440), (8, 2602635), (10, 2082108), (12, 1735090), (14, 1487220), (15, 1388072), (20, 1041054), (21, 991480), (24, 867545), (28, 743610), (30, 694036), (35, 594888), (40, 520527), (42, 495740), (49, 424920), (56, 371805), (60, 347018), (70, 297444), (84, 247870), (98, 212460), (105, 198296), (120, 173509), (140, 148722), (147, 141640), (168, 123935), (196, 106230), (210, 99148), (245, 84984), (280, 74361), (294, 70820), (392, 53115), (420, 49574), (490, 42492), (588, 35410), (735, 28328), (840, 24787), (980, 21246), (1176, 17705), (1470, 14164), (1960, 10623), (2940, 7082), (3541, 5880)]