40138840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{20479}}^1$

素因数の和:20504

約数の個数: 48

約数和(自身を含む): 105062400

約数和(自身を除く): 64923560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 20479, 40958, 81916, 102395, 143353, 163832, 204790, 286706, 409580, 573412, 716765, 819160, 1003471, 1146824, 1433530, 2006942, 2867060, 4013884, 5017355, 5734120, 8027768, 10034710, 20069420, 40138840]

約数ペア:

[(1, 40138840), (2, 20069420), (4, 10034710), (5, 8027768), (7, 5734120), (8, 5017355), (10, 4013884), (14, 2867060), (20, 2006942), (28, 1433530), (35, 1146824), (40, 1003471), (49, 819160), (56, 716765), (70, 573412), (98, 409580), (140, 286706), (196, 204790), (245, 163832), (280, 143353), (392, 102395), (490, 81916), (980, 40958), (1960, 20479)]