138658240

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:307

約数の個数: 168

約数和(自身を含む): 396118080

約数和(自身を除く): 257459840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 49, 56, 64, 70, 74, 80, 98, 112, 140, 148, 160, 185, 196, 224, 239, 245, 259, 280, 296, 320, 370, 392, 448, 478, 490, 518, 560, 592, 740, 784, 956, 980, 1036, 1120, 1184, 1195, 1295, 1480, 1568, 1673, 1813, 1912, 1960, 2072, 2240, 2368, 2390, 2590, 2960, 3136, 3346, 3626, 3824, 3920, 4144, 4780, 5180, 5920, 6692, 7252, 7648, 7840, 8288, 8365, 8843, 9065, 9560, 10360, 11711, 11840, 13384, 14504, 15296, 15680, 16576, 16730, 17686, 18130, 19120, 20720, 23422, 26768, 29008, 33460, 35372, 36260, 38240, 41440, 44215, 46844, 53536, 58016, 58555, 61901, 66920, 70744, 72520, 76480, 82880, 88430, 93688, 107072, 116032, 117110, 123802, 133840, 141488, 145040, 176860, 187376, 234220, 247604, 267680, 282976, 290080, 309505, 353720, 374752, 433307, 468440, 495208, 535360, 565952, 580160, 619010, 707440, 749504, 866614, 936880, 990416, 1238020, 1414880, 1733228, 1873760, 1980832, 2166535, 2476040, 2829760, 3466456, 3747520, 3961664, 4333070, 4952080, 6932912, 8666140, 9904160, 13865824, 17332280, 19808320, 27731648, 34664560, 69329120, 138658240]

約数ペア:

[(1, 138658240), (2, 69329120), (4, 34664560), (5, 27731648), (7, 19808320), (8, 17332280), (10, 13865824), (14, 9904160), (16, 8666140), (20, 6932912), (28, 4952080), (32, 4333070), (35, 3961664), (37, 3747520), (40, 3466456), (49, 2829760), (56, 2476040), (64, 2166535), (70, 1980832), (74, 1873760), (80, 1733228), (98, 1414880), (112, 1238020), (140, 990416), (148, 936880), (160, 866614), (185, 749504), (196, 707440), (224, 619010), (239, 580160), (245, 565952), (259, 535360), (280, 495208), (296, 468440), (320, 433307), (370, 374752), (392, 353720), (448, 309505), (478, 290080), (490, 282976), (518, 267680), (560, 247604), (592, 234220), (740, 187376), (784, 176860), (956, 145040), (980, 141488), (1036, 133840), (1120, 123802), (1184, 117110), (1195, 116032), (1295, 107072), (1480, 93688), (1568, 88430), (1673, 82880), (1813, 76480), (1912, 72520), (1960, 70744), (2072, 66920), (2240, 61901), (2368, 58555), (2390, 58016), (2590, 53536), (2960, 46844), (3136, 44215), (3346, 41440), (3626, 38240), (3824, 36260), (3920, 35372), (4144, 33460), (4780, 29008), (5180, 26768), (5920, 23422), (6692, 20720), (7252, 19120), (7648, 18130), (7840, 17686), (8288, 16730), (8365, 16576), (8843, 15680), (9065, 15296), (9560, 14504), (10360, 13384), (11711, 11840)]