20201474720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{70183}}^1$

素因数の和:70462

約数の個数: 96

約数和(自身を含む): 54756995328

約数和(自身を除く): 34555520608

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 257, 280, 514, 560, 1028, 1120, 1285, 1799, 2056, 2570, 3598, 4112, 5140, 7196, 8224, 8995, 10280, 14392, 17990, 20560, 28784, 35980, 41120, 57568, 70183, 71960, 140366, 143920, 280732, 287840, 350915, 491281, 561464, 701830, 982562, 1122928, 1403660, 1965124, 2245856, 2456405, 2807320, 3930248, 4912810, 5614640, 7860496, 9825620, 11229280, 15720992, 18037031, 19651240, 36074062, 39302480, 72148124, 78604960, 90185155, 126259217, 144296248, 180370310, 252518434, 288592496, 360740620, 505036868, 577184992, 631296085, 721481240, 1010073736, 1262592170, 1442962480, 2020147472, 2525184340, 2885924960, 4040294944, 5050368680, 10100737360, 20201474720]

約数ペア:

[(1, 20201474720), (2, 10100737360), (4, 5050368680), (5, 4040294944), (7, 2885924960), (8, 2525184340), (10, 2020147472), (14, 1442962480), (16, 1262592170), (20, 1010073736), (28, 721481240), (32, 631296085), (35, 577184992), (40, 505036868), (56, 360740620), (70, 288592496), (80, 252518434), (112, 180370310), (140, 144296248), (160, 126259217), (224, 90185155), (257, 78604960), (280, 72148124), (514, 39302480), (560, 36074062), (1028, 19651240), (1120, 18037031), (1285, 15720992), (1799, 11229280), (2056, 9825620), (2570, 7860496), (3598, 5614640), (4112, 4912810), (5140, 3930248), (7196, 2807320), (8224, 2456405), (8995, 2245856), (10280, 1965124), (14392, 1403660), (17990, 1122928), (20560, 982562), (28784, 701830), (35980, 561464), (41120, 491281), (57568, 350915), (70183, 287840), (71960, 280732), (140366, 143920)]