20008798720

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{14831}}^1$

素因数の和:14902

約数の個数: 160

約数和(自身を含む): 52438358016

約数和(自身を除く): 32429559296

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 32, 34, 40, 62, 64, 68, 80, 85, 124, 128, 136, 155, 160, 170, 248, 256, 272, 310, 320, 340, 496, 512, 527, 544, 620, 640, 680, 992, 1054, 1088, 1240, 1280, 1360, 1984, 2108, 2176, 2480, 2560, 2635, 2720, 3968, 4216, 4352, 4960, 5270, 5440, 7936, 8432, 8704, 9920, 10540, 10880, 14831, 15872, 16864, 19840, 21080, 21760, 29662, 33728, 39680, 42160, 43520, 59324, 67456, 74155, 79360, 84320, 118648, 134912, 148310, 168640, 237296, 252127, 269824, 296620, 337280, 459761, 474592, 504254, 593240, 674560, 919522, 949184, 1008508, 1186480, 1260635, 1349120, 1839044, 1898368, 2017016, 2298805, 2372960, 2521270, 3678088, 3796736, 4034032, 4597610, 4745920, 5042540, 7356176, 7593472, 7815937, 8068064, 9195220, 9491840, 10085080, 14712352, 15631874, 16136128, 18390440, 18983680, 20170160, 29424704, 31263748, 32272256, 36780880, 37967360, 39079685, 40340320, 58849408, 62527496, 64544512, 73561760, 78159370, 80680640, 117698816, 125054992, 129089024, 147123520, 156318740, 161361280, 235397632, 250109984, 294247040, 312637480, 322722560, 500219968, 588494080, 625274960, 645445120, 1000439936, 1176988160, 1250549920, 2000879872, 2501099840, 4001759744, 5002199680, 10004399360, 20008798720]

約数ペア:

[(1, 20008798720), (2, 10004399360), (4, 5002199680), (5, 4001759744), (8, 2501099840), (10, 2000879872), (16, 1250549920), (17, 1176988160), (20, 1000439936), (31, 645445120), (32, 625274960), (34, 588494080), (40, 500219968), (62, 322722560), (64, 312637480), (68, 294247040), (80, 250109984), (85, 235397632), (124, 161361280), (128, 156318740), (136, 147123520), (155, 129089024), (160, 125054992), (170, 117698816), (248, 80680640), (256, 78159370), (272, 73561760), (310, 64544512), (320, 62527496), (340, 58849408), (496, 40340320), (512, 39079685), (527, 37967360), (544, 36780880), (620, 32272256), (640, 31263748), (680, 29424704), (992, 20170160), (1054, 18983680), (1088, 18390440), (1240, 16136128), (1280, 15631874), (1360, 14712352), (1984, 10085080), (2108, 9491840), (2176, 9195220), (2480, 8068064), (2560, 7815937), (2635, 7593472), (2720, 7356176), (3968, 5042540), (4216, 4745920), (4352, 4597610), (4960, 4034032), (5270, 3796736), (5440, 3678088), (7936, 2521270), (8432, 2372960), (8704, 2298805), (9920, 2017016), (10540, 1898368), (10880, 1839044), (14831, 1349120), (15872, 1260635), (16864, 1186480), (19840, 1008508), (21080, 949184), (21760, 919522), (29662, 674560), (33728, 593240), (39680, 504254), (42160, 474592), (43520, 459761), (59324, 337280), (67456, 296620), (74155, 269824), (79360, 252127), (84320, 237296), (118648, 168640), (134912, 148310)]