199640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:72

約数の個数: 64

約数和(自身を含む): 552960

約数和(自身を除く): 353320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 31, 35, 40, 46, 56, 62, 70, 92, 115, 124, 140, 155, 161, 184, 217, 230, 248, 280, 310, 322, 434, 460, 620, 644, 713, 805, 868, 920, 1085, 1240, 1288, 1426, 1610, 1736, 2170, 2852, 3220, 3565, 4340, 4991, 5704, 6440, 7130, 8680, 9982, 14260, 19964, 24955, 28520, 39928, 49910, 99820, 199640]

約数ペア:

[(1, 199640), (2, 99820), (4, 49910), (5, 39928), (7, 28520), (8, 24955), (10, 19964), (14, 14260), (20, 9982), (23, 8680), (28, 7130), (31, 6440), (35, 5704), (40, 4991), (46, 4340), (56, 3565), (62, 3220), (70, 2852), (92, 2170), (115, 1736), (124, 1610), (140, 1426), (155, 1288), (161, 1240), (184, 1085), (217, 920), (230, 868), (248, 805), (280, 713), (310, 644), (322, 620), (434, 460)]