21002100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:234

約数の個数: 144

約数和(自身を含む): 70912128

約数和(自身を除く): 49910028

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 73, 75, 84, 100, 105, 137, 140, 146, 150, 175, 210, 219, 274, 292, 300, 350, 365, 411, 420, 438, 511, 525, 548, 685, 700, 730, 822, 876, 959, 1022, 1050, 1095, 1370, 1460, 1533, 1644, 1825, 1918, 2044, 2055, 2100, 2190, 2555, 2740, 2877, 3066, 3425, 3650, 3836, 4110, 4380, 4795, 5110, 5475, 5754, 6132, 6850, 7300, 7665, 8220, 9590, 10001, 10220, 10275, 10950, 11508, 12775, 13700, 14385, 15330, 19180, 20002, 20550, 21900, 23975, 25550, 28770, 30003, 30660, 38325, 40004, 41100, 47950, 50005, 51100, 57540, 60006, 70007, 71925, 76650, 95900, 100010, 120012, 140014, 143850, 150015, 153300, 200020, 210021, 250025, 280028, 287700, 300030, 350035, 420042, 500050, 600060, 700070, 750075, 840084, 1000100, 1050105, 1400140, 1500150, 1750175, 2100210, 3000300, 3500350, 4200420, 5250525, 7000700, 10501050, 21002100]

約数ペア:

[(1, 21002100), (2, 10501050), (3, 7000700), (4, 5250525), (5, 4200420), (6, 3500350), (7, 3000300), (10, 2100210), (12, 1750175), (14, 1500150), (15, 1400140), (20, 1050105), (21, 1000100), (25, 840084), (28, 750075), (30, 700070), (35, 600060), (42, 500050), (50, 420042), (60, 350035), (70, 300030), (73, 287700), (75, 280028), (84, 250025), (100, 210021), (105, 200020), (137, 153300), (140, 150015), (146, 143850), (150, 140014), (175, 120012), (210, 100010), (219, 95900), (274, 76650), (292, 71925), (300, 70007), (350, 60006), (365, 57540), (411, 51100), (420, 50005), (438, 47950), (511, 41100), (525, 40004), (548, 38325), (685, 30660), (700, 30003), (730, 28770), (822, 25550), (876, 23975), (959, 21900), (1022, 20550), (1050, 20002), (1095, 19180), (1370, 15330), (1460, 14385), (1533, 13700), (1644, 12775), (1825, 11508), (1918, 10950), (2044, 10275), (2055, 10220), (2100, 10001), (2190, 9590), (2555, 8220), (2740, 7665), (2877, 7300), (3066, 6850), (3425, 6132), (3650, 5754), (3836, 5475), (4110, 5110), (4380, 4795)]