18769940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:309

約数の個数: 72

約数和(自身を含む): 46539360

約数和(自身を除く): 27769420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 107, 140, 179, 196, 214, 245, 358, 428, 490, 535, 716, 749, 895, 980, 1070, 1253, 1498, 1790, 2140, 2506, 2996, 3580, 3745, 5012, 5243, 6265, 7490, 8771, 10486, 12530, 14980, 17542, 19153, 20972, 25060, 26215, 35084, 38306, 43855, 52430, 76612, 87710, 95765, 104860, 134071, 175420, 191530, 268142, 383060, 536284, 670355, 938497, 1340710, 1876994, 2681420, 3753988, 4692485, 9384970, 18769940]

約数ペア:

[(1, 18769940), (2, 9384970), (4, 4692485), (5, 3753988), (7, 2681420), (10, 1876994), (14, 1340710), (20, 938497), (28, 670355), (35, 536284), (49, 383060), (70, 268142), (98, 191530), (107, 175420), (140, 134071), (179, 104860), (196, 95765), (214, 87710), (245, 76612), (358, 52430), (428, 43855), (490, 38306), (535, 35084), (716, 26215), (749, 25060), (895, 20972), (980, 19153), (1070, 17542), (1253, 14980), (1498, 12530), (1790, 10486), (2140, 8771), (2506, 7490), (2996, 6265), (3580, 5243), (3745, 5012)]