21289560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:201

約数の個数: 128

約数和(自身を含む): 67737600

約数和(自身を除く): 46448040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 59, 60, 62, 93, 97, 118, 120, 124, 155, 177, 186, 194, 236, 248, 291, 295, 310, 354, 372, 388, 465, 472, 485, 582, 590, 620, 708, 744, 776, 885, 930, 970, 1164, 1180, 1240, 1416, 1455, 1770, 1829, 1860, 1940, 2328, 2360, 2910, 3007, 3540, 3658, 3720, 3880, 5487, 5723, 5820, 6014, 7080, 7316, 9021, 9145, 10974, 11446, 11640, 12028, 14632, 15035, 17169, 18042, 18290, 21948, 22892, 24056, 27435, 28615, 30070, 34338, 36084, 36580, 43896, 45105, 45784, 54870, 57230, 60140, 68676, 72168, 73160, 85845, 90210, 109740, 114460, 120280, 137352, 171690, 177413, 180420, 219480, 228920, 343380, 354826, 360840, 532239, 686760, 709652, 887065, 1064478, 1419304, 1774130, 2128956, 2661195, 3548260, 4257912, 5322390, 7096520, 10644780, 21289560]

約数ペア:

[(1, 21289560), (2, 10644780), (3, 7096520), (4, 5322390), (5, 4257912), (6, 3548260), (8, 2661195), (10, 2128956), (12, 1774130), (15, 1419304), (20, 1064478), (24, 887065), (30, 709652), (31, 686760), (40, 532239), (59, 360840), (60, 354826), (62, 343380), (93, 228920), (97, 219480), (118, 180420), (120, 177413), (124, 171690), (155, 137352), (177, 120280), (186, 114460), (194, 109740), (236, 90210), (248, 85845), (291, 73160), (295, 72168), (310, 68676), (354, 60140), (372, 57230), (388, 54870), (465, 45784), (472, 45105), (485, 43896), (582, 36580), (590, 36084), (620, 34338), (708, 30070), (744, 28615), (776, 27435), (885, 24056), (930, 22892), (970, 21948), (1164, 18290), (1180, 18042), (1240, 17169), (1416, 15035), (1455, 14632), (1770, 12028), (1829, 11640), (1860, 11446), (1940, 10974), (2328, 9145), (2360, 9021), (2910, 7316), (3007, 7080), (3540, 6014), (3658, 5820), (3720, 5723), (3880, 5487)]