20928720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:173

約数の個数: 160

約数和(自身を含む): 69995520

約数和(自身を除く): 49066800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 29, 30, 31, 40, 48, 58, 60, 62, 80, 87, 93, 97, 116, 120, 124, 145, 155, 174, 186, 194, 232, 240, 248, 290, 291, 310, 348, 372, 388, 435, 464, 465, 485, 496, 580, 582, 620, 696, 744, 776, 870, 899, 930, 970, 1160, 1164, 1240, 1392, 1455, 1488, 1552, 1740, 1798, 1860, 1940, 2320, 2328, 2480, 2697, 2813, 2910, 3007, 3480, 3596, 3720, 3880, 4495, 4656, 5394, 5626, 5820, 6014, 6960, 7192, 7440, 7760, 8439, 8990, 9021, 10788, 11252, 11640, 12028, 13485, 14065, 14384, 15035, 16878, 17980, 18042, 21576, 22504, 23280, 24056, 26970, 28130, 30070, 33756, 35960, 36084, 42195, 43152, 45008, 45105, 48112, 53940, 56260, 60140, 67512, 71920, 72168, 84390, 87203, 90210, 107880, 112520, 120280, 135024, 144336, 168780, 174406, 180420, 215760, 225040, 240560, 261609, 337560, 348812, 360840, 436015, 523218, 675120, 697624, 721680, 872030, 1046436, 1308045, 1395248, 1744060, 2092872, 2616090, 3488120, 4185744, 5232180, 6976240, 10464360, 20928720]

約数ペア:

[(1, 20928720), (2, 10464360), (3, 6976240), (4, 5232180), (5, 4185744), (6, 3488120), (8, 2616090), (10, 2092872), (12, 1744060), (15, 1395248), (16, 1308045), (20, 1046436), (24, 872030), (29, 721680), (30, 697624), (31, 675120), (40, 523218), (48, 436015), (58, 360840), (60, 348812), (62, 337560), (80, 261609), (87, 240560), (93, 225040), (97, 215760), (116, 180420), (120, 174406), (124, 168780), (145, 144336), (155, 135024), (174, 120280), (186, 112520), (194, 107880), (232, 90210), (240, 87203), (248, 84390), (290, 72168), (291, 71920), (310, 67512), (348, 60140), (372, 56260), (388, 53940), (435, 48112), (464, 45105), (465, 45008), (485, 43152), (496, 42195), (580, 36084), (582, 35960), (620, 33756), (696, 30070), (744, 28130), (776, 26970), (870, 24056), (899, 23280), (930, 22504), (970, 21576), (1160, 18042), (1164, 17980), (1240, 16878), (1392, 15035), (1455, 14384), (1488, 14065), (1552, 13485), (1740, 12028), (1798, 11640), (1860, 11252), (1940, 10788), (2320, 9021), (2328, 8990), (2480, 8439), (2697, 7760), (2813, 7440), (2910, 7192), (3007, 6960), (3480, 6014), (3596, 5820), (3720, 5626), (3880, 5394), (4495, 4656)]