20013280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{167}}^1$

素因数の和:296

約数の個数: 96

約数和(自身を含む): 54867456

約数和(自身を除く): 34854176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 107, 112, 140, 160, 167, 214, 224, 280, 334, 428, 535, 560, 668, 749, 835, 856, 1070, 1120, 1169, 1336, 1498, 1670, 1712, 2140, 2338, 2672, 2996, 3340, 3424, 3745, 4280, 4676, 5344, 5845, 5992, 6680, 7490, 8560, 9352, 11690, 11984, 13360, 14980, 17120, 17869, 18704, 23380, 23968, 26720, 29960, 35738, 37408, 46760, 59920, 71476, 89345, 93520, 119840, 125083, 142952, 178690, 187040, 250166, 285904, 357380, 500332, 571808, 625415, 714760, 1000664, 1250830, 1429520, 2001328, 2501660, 2859040, 4002656, 5003320, 10006640, 20013280]

約数ペア:

[(1, 20013280), (2, 10006640), (4, 5003320), (5, 4002656), (7, 2859040), (8, 2501660), (10, 2001328), (14, 1429520), (16, 1250830), (20, 1000664), (28, 714760), (32, 625415), (35, 571808), (40, 500332), (56, 357380), (70, 285904), (80, 250166), (107, 187040), (112, 178690), (140, 142952), (160, 125083), (167, 119840), (214, 93520), (224, 89345), (280, 71476), (334, 59920), (428, 46760), (535, 37408), (560, 35738), (668, 29960), (749, 26720), (835, 23968), (856, 23380), (1070, 18704), (1120, 17869), (1169, 17120), (1336, 14980), (1498, 13360), (1670, 11984), (1712, 11690), (2140, 9352), (2338, 8560), (2672, 7490), (2996, 6680), (3340, 5992), (3424, 5845), (3745, 5344), (4280, 4676)]