31978240

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 90655488

約数和(自身を除く): 58677248

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 56, 64, 70, 80, 83, 86, 112, 128, 140, 160, 166, 172, 215, 224, 256, 280, 301, 320, 332, 344, 415, 430, 448, 560, 581, 602, 640, 664, 688, 830, 860, 896, 1120, 1162, 1204, 1280, 1328, 1376, 1505, 1660, 1720, 1792, 2240, 2324, 2408, 2656, 2752, 2905, 3010, 3320, 3440, 3569, 4480, 4648, 4816, 5312, 5504, 5810, 6020, 6640, 6880, 7138, 8960, 9296, 9632, 10624, 11008, 11620, 12040, 13280, 13760, 14276, 17845, 18592, 19264, 21248, 23240, 24080, 24983, 26560, 27520, 28552, 35690, 37184, 38528, 46480, 48160, 49966, 53120, 55040, 57104, 71380, 74368, 77056, 92960, 96320, 99932, 106240, 114208, 124915, 142760, 148736, 185920, 192640, 199864, 228416, 249830, 285520, 371840, 385280, 399728, 456832, 499660, 571040, 743680, 799456, 913664, 999320, 1142080, 1598912, 1998640, 2284160, 3197824, 3997280, 4568320, 6395648, 7994560, 15989120, 31978240]

約数ペア:

[(1, 31978240), (2, 15989120), (4, 7994560), (5, 6395648), (7, 4568320), (8, 3997280), (10, 3197824), (14, 2284160), (16, 1998640), (20, 1598912), (28, 1142080), (32, 999320), (35, 913664), (40, 799456), (43, 743680), (56, 571040), (64, 499660), (70, 456832), (80, 399728), (83, 385280), (86, 371840), (112, 285520), (128, 249830), (140, 228416), (160, 199864), (166, 192640), (172, 185920), (215, 148736), (224, 142760), (256, 124915), (280, 114208), (301, 106240), (320, 99932), (332, 96320), (344, 92960), (415, 77056), (430, 74368), (448, 71380), (560, 57104), (581, 55040), (602, 53120), (640, 49966), (664, 48160), (688, 46480), (830, 38528), (860, 37184), (896, 35690), (1120, 28552), (1162, 27520), (1204, 26560), (1280, 24983), (1328, 24080), (1376, 23240), (1505, 21248), (1660, 19264), (1720, 18592), (1792, 17845), (2240, 14276), (2324, 13760), (2408, 13280), (2656, 12040), (2752, 11620), (2905, 11008), (3010, 10624), (3320, 9632), (3440, 9296), (3569, 8960), (4480, 7138), (4648, 6880), (4816, 6640), (5312, 6020), (5504, 5810)]