81316480

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{2593}}^1$

素因数の和:2626

約数の個数: 96

約数和(自身を含む): 226222740

約数和(自身を除く): 144906260

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 640, 784, 896, 980, 1120, 1568, 1960, 2240, 2593, 3136, 3920, 4480, 5186, 6272, 7840, 10372, 12965, 15680, 18151, 20744, 25930, 31360, 36302, 41488, 51860, 72604, 82976, 90755, 103720, 127057, 145208, 165952, 181510, 207440, 254114, 290416, 331904, 363020, 414880, 508228, 580832, 635285, 726040, 829760, 1016456, 1161664, 1270570, 1452080, 1659520, 2032912, 2323328, 2541140, 2904160, 4065824, 5082280, 5808320, 8131648, 10164560, 11616640, 16263296, 20329120, 40658240, 81316480]

約数ペア:

[(1, 81316480), (2, 40658240), (4, 20329120), (5, 16263296), (7, 11616640), (8, 10164560), (10, 8131648), (14, 5808320), (16, 5082280), (20, 4065824), (28, 2904160), (32, 2541140), (35, 2323328), (40, 2032912), (49, 1659520), (56, 1452080), (64, 1270570), (70, 1161664), (80, 1016456), (98, 829760), (112, 726040), (128, 635285), (140, 580832), (160, 508228), (196, 414880), (224, 363020), (245, 331904), (280, 290416), (320, 254114), (392, 207440), (448, 181510), (490, 165952), (560, 145208), (640, 127057), (784, 103720), (896, 90755), (980, 82976), (1120, 72604), (1568, 51860), (1960, 41488), (2240, 36302), (2593, 31360), (3136, 25930), (3920, 20744), (4480, 18151), (5186, 15680), (6272, 12965), (7840, 10372)]