20445480

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1721}}^1$

素因数の和:1752

約数の個数: 128

約数和(自身を含む): 74390400

約数和(自身を除く): 53944920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 54, 55, 60, 66, 72, 88, 90, 99, 108, 110, 120, 132, 135, 165, 180, 198, 216, 220, 264, 270, 297, 330, 360, 396, 440, 495, 540, 594, 660, 792, 990, 1080, 1188, 1320, 1485, 1721, 1980, 2376, 2970, 3442, 3960, 5163, 5940, 6884, 8605, 10326, 11880, 13768, 15489, 17210, 18931, 20652, 25815, 30978, 34420, 37862, 41304, 46467, 51630, 56793, 61956, 68840, 75724, 77445, 92934, 94655, 103260, 113586, 123912, 151448, 154890, 170379, 185868, 189310, 206520, 227172, 232335, 283965, 309780, 340758, 371736, 378620, 454344, 464670, 511137, 567930, 619560, 681516, 757240, 851895, 929340, 1022274, 1135860, 1363032, 1703790, 1858680, 2044548, 2271720, 2555685, 3407580, 4089096, 5111370, 6815160, 10222740, 20445480]

約数ペア:

[(1, 20445480), (2, 10222740), (3, 6815160), (4, 5111370), (5, 4089096), (6, 3407580), (8, 2555685), (9, 2271720), (10, 2044548), (11, 1858680), (12, 1703790), (15, 1363032), (18, 1135860), (20, 1022274), (22, 929340), (24, 851895), (27, 757240), (30, 681516), (33, 619560), (36, 567930), (40, 511137), (44, 464670), (45, 454344), (54, 378620), (55, 371736), (60, 340758), (66, 309780), (72, 283965), (88, 232335), (90, 227172), (99, 206520), (108, 189310), (110, 185868), (120, 170379), (132, 154890), (135, 151448), (165, 123912), (180, 113586), (198, 103260), (216, 94655), (220, 92934), (264, 77445), (270, 75724), (297, 68840), (330, 61956), (360, 56793), (396, 51630), (440, 46467), (495, 41304), (540, 37862), (594, 34420), (660, 30978), (792, 25815), (990, 20652), (1080, 18931), (1188, 17210), (1320, 15489), (1485, 13768), (1721, 11880), (1980, 10326), (2376, 8605), (2970, 6884), (3442, 5940), (3960, 5163)]