20819848

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 47001600

約数和(自身を除く): 26181752

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 67, 124, 134, 179, 217, 248, 268, 358, 434, 469, 536, 716, 868, 938, 1253, 1432, 1736, 1876, 2077, 2506, 3752, 4154, 5012, 5549, 8308, 10024, 11098, 11993, 14539, 16616, 22196, 23986, 29078, 38843, 44392, 47972, 58156, 77686, 83951, 95944, 116312, 155372, 167902, 310744, 335804, 371783, 671608, 743566, 1487132, 2602481, 2974264, 5204962, 10409924, 20819848]

約数ペア:

[(1, 20819848), (2, 10409924), (4, 5204962), (7, 2974264), (8, 2602481), (14, 1487132), (28, 743566), (31, 671608), (56, 371783), (62, 335804), (67, 310744), (124, 167902), (134, 155372), (179, 116312), (217, 95944), (248, 83951), (268, 77686), (358, 58156), (434, 47972), (469, 44392), (536, 38843), (716, 29078), (868, 23986), (938, 22196), (1253, 16616), (1432, 14539), (1736, 11993), (1876, 11098), (2077, 10024), (2506, 8308), (3752, 5549), (4154, 5012)]