31343480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:229

約数の個数: 128

約数和(自身を含む): 87367680

約数和(自身を除く): 56024200

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, 157, 161, 184, 217, 230, 248, 280, 310, 314, 322, 434, 460, 620, 628, 644, 713, 785, 805, 868, 920, 1085, 1099, 1240, 1256, 1288, 1426, 1570, 1610, 1736, 2170, 2198, 2852, 3140, 3220, 3565, 3611, 4340, 4396, 4867, 4991, 5495, 5704, 6280, 6440, 7130, 7222, 8680, 8792, 9734, 9982, 10990, 14260, 14444, 18055, 19468, 19964, 21980, 24335, 24955, 25277, 28520, 28888, 34069, 36110, 38936, 39928, 43960, 48670, 49910, 50554, 68138, 72220, 97340, 99820, 101108, 111941, 126385, 136276, 144440, 170345, 194680, 199640, 202216, 223882, 252770, 272552, 340690, 447764, 505540, 559705, 681380, 783587, 895528, 1011080, 1119410, 1362760, 1567174, 2238820, 3134348, 3917935, 4477640, 6268696, 7835870, 15671740, 31343480]

約数ペア:

[(1, 31343480), (2, 15671740), (4, 7835870), (5, 6268696), (7, 4477640), (8, 3917935), (10, 3134348), (14, 2238820), (20, 1567174), (23, 1362760), (28, 1119410), (31, 1011080), (35, 895528), (40, 783587), (46, 681380), (56, 559705), (62, 505540), (70, 447764), (92, 340690), (115, 272552), (124, 252770), (140, 223882), (155, 202216), (157, 199640), (161, 194680), (184, 170345), (217, 144440), (230, 136276), (248, 126385), (280, 111941), (310, 101108), (314, 99820), (322, 97340), (434, 72220), (460, 68138), (620, 50554), (628, 49910), (644, 48670), (713, 43960), (785, 39928), (805, 38936), (868, 36110), (920, 34069), (1085, 28888), (1099, 28520), (1240, 25277), (1256, 24955), (1288, 24335), (1426, 21980), (1570, 19964), (1610, 19468), (1736, 18055), (2170, 14444), (2198, 14260), (2852, 10990), (3140, 9982), (3220, 9734), (3565, 8792), (3611, 8680), (4340, 7222), (4396, 7130), (4867, 6440), (4991, 6280), (5495, 5704)]