42987980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1543}}^1$

素因数の和:1758

約数の個数: 48

約数和(自身を含む): 103756800

約数和(自身を除く): 60768820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1393, 1543, 1990, 2786, 3086, 3980, 5572, 6172, 6965, 7715, 10801, 13930, 15430, 21602, 27860, 30860, 43204, 54005, 108010, 216020, 307057, 614114, 1228228, 1535285, 2149399, 3070570, 4298798, 6141140, 8597596, 10746995, 21493990, 42987980]

約数ペア:

[(1, 42987980), (2, 21493990), (4, 10746995), (5, 8597596), (7, 6141140), (10, 4298798), (14, 3070570), (20, 2149399), (28, 1535285), (35, 1228228), (70, 614114), (140, 307057), (199, 216020), (398, 108010), (796, 54005), (995, 43204), (1393, 30860), (1543, 27860), (1990, 21602), (2786, 15430), (3086, 13930), (3980, 10801), (5572, 7715), (6172, 6965)]