20791260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{569}}^1$

素因数の和:620

約数の個数: 144

約数和(自身を含む): 74692800

約数和(自身を除く): 53901540

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 29, 30, 35, 36, 42, 45, 58, 60, 63, 70, 84, 87, 90, 105, 116, 126, 140, 145, 174, 180, 203, 210, 252, 261, 290, 315, 348, 406, 420, 435, 522, 569, 580, 609, 630, 812, 870, 1015, 1044, 1138, 1218, 1260, 1305, 1707, 1740, 1827, 2030, 2276, 2436, 2610, 2845, 3045, 3414, 3654, 3983, 4060, 5121, 5220, 5690, 6090, 6828, 7308, 7966, 8535, 9135, 10242, 11380, 11949, 12180, 15932, 16501, 17070, 18270, 19915, 20484, 23898, 25605, 33002, 34140, 35847, 36540, 39830, 47796, 49503, 51210, 59745, 66004, 71694, 79660, 82505, 99006, 102420, 115507, 119490, 143388, 148509, 165010, 179235, 198012, 231014, 238980, 247515, 297018, 330020, 346521, 358470, 462028, 495030, 577535, 594036, 693042, 716940, 742545, 990060, 1039563, 1155070, 1386084, 1485090, 1732605, 2079126, 2310140, 2970180, 3465210, 4158252, 5197815, 6930420, 10395630, 20791260]

約数ペア:

[(1, 20791260), (2, 10395630), (3, 6930420), (4, 5197815), (5, 4158252), (6, 3465210), (7, 2970180), (9, 2310140), (10, 2079126), (12, 1732605), (14, 1485090), (15, 1386084), (18, 1155070), (20, 1039563), (21, 990060), (28, 742545), (29, 716940), (30, 693042), (35, 594036), (36, 577535), (42, 495030), (45, 462028), (58, 358470), (60, 346521), (63, 330020), (70, 297018), (84, 247515), (87, 238980), (90, 231014), (105, 198012), (116, 179235), (126, 165010), (140, 148509), (145, 143388), (174, 119490), (180, 115507), (203, 102420), (210, 99006), (252, 82505), (261, 79660), (290, 71694), (315, 66004), (348, 59745), (406, 51210), (420, 49503), (435, 47796), (522, 39830), (569, 36540), (580, 35847), (609, 34140), (630, 33002), (812, 25605), (870, 23898), (1015, 20484), (1044, 19915), (1138, 18270), (1218, 17070), (1260, 16501), (1305, 15932), (1707, 12180), (1740, 11949), (1827, 11380), (2030, 10242), (2276, 9135), (2436, 8535), (2610, 7966), (2845, 7308), (3045, 6828), (3414, 6090), (3654, 5690), (3983, 5220), (4060, 5121)]