28821760

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 144

約数和(自身を含む): 79470720

約数和(自身を除く): 50648960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 64, 80, 88, 89, 92, 110, 115, 128, 160, 176, 178, 184, 220, 230, 253, 256, 320, 352, 356, 368, 440, 445, 460, 506, 640, 704, 712, 736, 880, 890, 920, 979, 1012, 1265, 1280, 1408, 1424, 1472, 1760, 1780, 1840, 1958, 2024, 2047, 2530, 2816, 2848, 2944, 3520, 3560, 3680, 3916, 4048, 4094, 4895, 5060, 5696, 5888, 7040, 7120, 7360, 7832, 8096, 8188, 9790, 10120, 10235, 11392, 14080, 14240, 14720, 15664, 16192, 16376, 19580, 20240, 20470, 22517, 22784, 28480, 29440, 31328, 32384, 32752, 39160, 40480, 40940, 45034, 56960, 62656, 64768, 65504, 78320, 80960, 81880, 90068, 112585, 113920, 125312, 131008, 156640, 161920, 163760, 180136, 225170, 250624, 262016, 313280, 323840, 327520, 360272, 450340, 524032, 626560, 655040, 720544, 900680, 1253120, 1310080, 1441088, 1801360, 2620160, 2882176, 3602720, 5764352, 7205440, 14410880, 28821760]

約数ペア:

[(1, 28821760), (2, 14410880), (4, 7205440), (5, 5764352), (8, 3602720), (10, 2882176), (11, 2620160), (16, 1801360), (20, 1441088), (22, 1310080), (23, 1253120), (32, 900680), (40, 720544), (44, 655040), (46, 626560), (55, 524032), (64, 450340), (80, 360272), (88, 327520), (89, 323840), (92, 313280), (110, 262016), (115, 250624), (128, 225170), (160, 180136), (176, 163760), (178, 161920), (184, 156640), (220, 131008), (230, 125312), (253, 113920), (256, 112585), (320, 90068), (352, 81880), (356, 80960), (368, 78320), (440, 65504), (445, 64768), (460, 62656), (506, 56960), (640, 45034), (704, 40940), (712, 40480), (736, 39160), (880, 32752), (890, 32384), (920, 31328), (979, 29440), (1012, 28480), (1265, 22784), (1280, 22517), (1408, 20470), (1424, 20240), (1472, 19580), (1760, 16376), (1780, 16192), (1840, 15664), (1958, 14720), (2024, 14240), (2047, 14080), (2530, 11392), (2816, 10235), (2848, 10120), (2944, 9790), (3520, 8188), (3560, 8096), (3680, 7832), (3916, 7360), (4048, 7120), (4094, 7040), (4895, 5888), (5060, 5696)]