39991840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{5101}}^1$

素因数の和:5130

約数の個数: 72

約数和(自身を含む): 109927692

約数和(自身を除く): 69935852

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 5101, 7840, 10202, 20404, 25505, 35707, 40808, 51010, 71414, 81616, 102020, 142828, 163232, 178535, 204040, 249949, 285656, 357070, 408080, 499898, 571312, 714140, 816160, 999796, 1142624, 1249745, 1428280, 1999592, 2499490, 2856560, 3999184, 4998980, 5713120, 7998368, 9997960, 19995920, 39991840]

約数ペア:

[(1, 39991840), (2, 19995920), (4, 9997960), (5, 7998368), (7, 5713120), (8, 4998980), (10, 3999184), (14, 2856560), (16, 2499490), (20, 1999592), (28, 1428280), (32, 1249745), (35, 1142624), (40, 999796), (49, 816160), (56, 714140), (70, 571312), (80, 499898), (98, 408080), (112, 357070), (140, 285656), (160, 249949), (196, 204040), (224, 178535), (245, 163232), (280, 142828), (392, 102020), (490, 81616), (560, 71414), (784, 51010), (980, 40808), (1120, 35707), (1568, 25505), (1960, 20404), (3920, 10202), (5101, 7840)]