38940980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{281}}^1$

素因数の和:357

約数の個数: 72

約数和(自身を含む): 91032984

約数和(自身を除く): 52092004

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 169, 205, 260, 281, 338, 410, 533, 562, 676, 820, 845, 1066, 1124, 1405, 1690, 2132, 2665, 2810, 3380, 3653, 5330, 5620, 6929, 7306, 10660, 11521, 13858, 14612, 18265, 23042, 27716, 34645, 36530, 46084, 47489, 57605, 69290, 73060, 94978, 115210, 138580, 149773, 189956, 230420, 237445, 299546, 474890, 599092, 748865, 949780, 1497730, 1947049, 2995460, 3894098, 7788196, 9735245, 19470490, 38940980]

約数ペア:

[(1, 38940980), (2, 19470490), (4, 9735245), (5, 7788196), (10, 3894098), (13, 2995460), (20, 1947049), (26, 1497730), (41, 949780), (52, 748865), (65, 599092), (82, 474890), (130, 299546), (164, 237445), (169, 230420), (205, 189956), (260, 149773), (281, 138580), (338, 115210), (410, 94978), (533, 73060), (562, 69290), (676, 57605), (820, 47489), (845, 46084), (1066, 36530), (1124, 34645), (1405, 27716), (1690, 23042), (2132, 18265), (2665, 14612), (2810, 13858), (3380, 11521), (3653, 10660), (5330, 7306), (5620, 6929)]