20752144

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:228

約数の個数: 80

約数和(自身を含む): 48885760

約数和(自身を除く): 28133616

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 43, 56, 62, 86, 112, 124, 139, 172, 217, 248, 278, 301, 344, 434, 496, 556, 602, 688, 868, 973, 1112, 1204, 1333, 1736, 1946, 2224, 2408, 2666, 3472, 3892, 4309, 4816, 5332, 5977, 7784, 8618, 9331, 10664, 11954, 15568, 17236, 18662, 21328, 23908, 30163, 34472, 37324, 41839, 47816, 60326, 68944, 74648, 83678, 95632, 120652, 149296, 167356, 185287, 241304, 334712, 370574, 482608, 669424, 741148, 1297009, 1482296, 2594018, 2964592, 5188036, 10376072, 20752144]

約数ペア:

[(1, 20752144), (2, 10376072), (4, 5188036), (7, 2964592), (8, 2594018), (14, 1482296), (16, 1297009), (28, 741148), (31, 669424), (43, 482608), (56, 370574), (62, 334712), (86, 241304), (112, 185287), (124, 167356), (139, 149296), (172, 120652), (217, 95632), (248, 83678), (278, 74648), (301, 68944), (344, 60326), (434, 47816), (496, 41839), (556, 37324), (602, 34472), (688, 30163), (868, 23908), (973, 21328), (1112, 18662), (1204, 17236), (1333, 15568), (1736, 11954), (1946, 10664), (2224, 9331), (2408, 8618), (2666, 7784), (3472, 5977), (3892, 5332), (4309, 4816)]