31871280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:395

約数の個数: 160

約数和(自身を含む): 115135488

約数和(自身を除く): 83264208

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 61, 70, 80, 84, 105, 112, 120, 122, 140, 168, 183, 210, 240, 244, 280, 305, 311, 336, 366, 420, 427, 488, 560, 610, 622, 732, 840, 854, 915, 933, 976, 1220, 1244, 1281, 1464, 1555, 1680, 1708, 1830, 1866, 2135, 2177, 2440, 2488, 2562, 2928, 3110, 3416, 3660, 3732, 4270, 4354, 4665, 4880, 4976, 5124, 6220, 6405, 6531, 6832, 7320, 7464, 8540, 8708, 9330, 10248, 10885, 12440, 12810, 13062, 14640, 14928, 17080, 17416, 18660, 18971, 20496, 21770, 24880, 25620, 26124, 32655, 34160, 34832, 37320, 37942, 43540, 51240, 52248, 56913, 65310, 74640, 75884, 87080, 94855, 102480, 104496, 113826, 130620, 132797, 151768, 174160, 189710, 227652, 261240, 265594, 284565, 303536, 379420, 398391, 455304, 522480, 531188, 569130, 663985, 758840, 796782, 910608, 1062376, 1138260, 1327970, 1517680, 1593564, 1991955, 2124752, 2276520, 2655940, 3187128, 3983910, 4553040, 5311880, 6374256, 7967820, 10623760, 15935640, 31871280]

約数ペア:

[(1, 31871280), (2, 15935640), (3, 10623760), (4, 7967820), (5, 6374256), (6, 5311880), (7, 4553040), (8, 3983910), (10, 3187128), (12, 2655940), (14, 2276520), (15, 2124752), (16, 1991955), (20, 1593564), (21, 1517680), (24, 1327970), (28, 1138260), (30, 1062376), (35, 910608), (40, 796782), (42, 758840), (48, 663985), (56, 569130), (60, 531188), (61, 522480), (70, 455304), (80, 398391), (84, 379420), (105, 303536), (112, 284565), (120, 265594), (122, 261240), (140, 227652), (168, 189710), (183, 174160), (210, 151768), (240, 132797), (244, 130620), (280, 113826), (305, 104496), (311, 102480), (336, 94855), (366, 87080), (420, 75884), (427, 74640), (488, 65310), (560, 56913), (610, 52248), (622, 51240), (732, 43540), (840, 37942), (854, 37320), (915, 34832), (933, 34160), (976, 32655), (1220, 26124), (1244, 25620), (1281, 24880), (1464, 21770), (1555, 20496), (1680, 18971), (1708, 18660), (1830, 17416), (1866, 17080), (2135, 14928), (2177, 14640), (2440, 13062), (2488, 12810), (2562, 12440), (2928, 10885), (3110, 10248), (3416, 9330), (3660, 8708), (3732, 8540), (4270, 7464), (4354, 7320), (4665, 6832), (4880, 6531), (4976, 6405), (5124, 6220)]