388739820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^2\times {\mathrm{419}}^1$

素因数の和:532

約数の個数: 144

約数和(自身を含む): 1274031360

約数和(自身を除く): 885291540

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 60, 70, 84, 94, 105, 140, 141, 188, 210, 235, 282, 329, 419, 420, 470, 564, 658, 705, 838, 940, 987, 1257, 1316, 1410, 1645, 1676, 1974, 2095, 2209, 2514, 2820, 2933, 3290, 3948, 4190, 4418, 4935, 5028, 5866, 6285, 6580, 6627, 8380, 8799, 8836, 9870, 11045, 11732, 12570, 13254, 14665, 15463, 17598, 19693, 19740, 22090, 25140, 26508, 29330, 30926, 33135, 35196, 39386, 43995, 44180, 46389, 58660, 59079, 61852, 66270, 77315, 78772, 87990, 92778, 98465, 118158, 132540, 137851, 154630, 175980, 185556, 196930, 231945, 236316, 275702, 295395, 309260, 393860, 413553, 463890, 551404, 590790, 689255, 827106, 925571, 927780, 1181580, 1378510, 1654212, 1851142, 2067765, 2757020, 2776713, 3702284, 4135530, 4627855, 5553426, 6478997, 8271060, 9255710, 11106852, 12957994, 13883565, 18511420, 19436991, 25915988, 27767130, 32394985, 38873982, 55534260, 64789970, 77747964, 97184955, 129579940, 194369910, 388739820]

約数ペア:

[(1, 388739820), (2, 194369910), (3, 129579940), (4, 97184955), (5, 77747964), (6, 64789970), (7, 55534260), (10, 38873982), (12, 32394985), (14, 27767130), (15, 25915988), (20, 19436991), (21, 18511420), (28, 13883565), (30, 12957994), (35, 11106852), (42, 9255710), (47, 8271060), (60, 6478997), (70, 5553426), (84, 4627855), (94, 4135530), (105, 3702284), (140, 2776713), (141, 2757020), (188, 2067765), (210, 1851142), (235, 1654212), (282, 1378510), (329, 1181580), (419, 927780), (420, 925571), (470, 827106), (564, 689255), (658, 590790), (705, 551404), (838, 463890), (940, 413553), (987, 393860), (1257, 309260), (1316, 295395), (1410, 275702), (1645, 236316), (1676, 231945), (1974, 196930), (2095, 185556), (2209, 175980), (2514, 154630), (2820, 137851), (2933, 132540), (3290, 118158), (3948, 98465), (4190, 92778), (4418, 87990), (4935, 78772), (5028, 77315), (5866, 66270), (6285, 61852), (6580, 59079), (6627, 58660), (8380, 46389), (8799, 44180), (8836, 43995), (9870, 39386), (11045, 35196), (11732, 33135), (12570, 30926), (13254, 29330), (14665, 26508), (15463, 25140), (17598, 22090), (19693, 19740)]