20964804

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:225

約数の個数: 96

約数和(自身を含む): 59006976

約数和(自身を除く): 38042172

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 31, 42, 62, 83, 84, 93, 97, 124, 166, 186, 194, 217, 249, 291, 332, 372, 388, 434, 498, 581, 582, 651, 679, 868, 996, 1162, 1164, 1302, 1358, 1743, 2037, 2324, 2573, 2604, 2716, 3007, 3486, 4074, 5146, 6014, 6972, 7719, 8051, 8148, 9021, 10292, 12028, 15438, 16102, 18011, 18042, 21049, 24153, 30876, 32204, 36022, 36084, 42098, 48306, 54033, 56357, 63147, 72044, 84196, 96612, 108066, 112714, 126294, 169071, 216132, 225428, 249581, 252588, 338142, 499162, 676284, 748743, 998324, 1497486, 1747067, 2994972, 3494134, 5241201, 6988268, 10482402, 20964804]

約数ペア:

[(1, 20964804), (2, 10482402), (3, 6988268), (4, 5241201), (6, 3494134), (7, 2994972), (12, 1747067), (14, 1497486), (21, 998324), (28, 748743), (31, 676284), (42, 499162), (62, 338142), (83, 252588), (84, 249581), (93, 225428), (97, 216132), (124, 169071), (166, 126294), (186, 112714), (194, 108066), (217, 96612), (249, 84196), (291, 72044), (332, 63147), (372, 56357), (388, 54033), (434, 48306), (498, 42098), (581, 36084), (582, 36022), (651, 32204), (679, 30876), (868, 24153), (996, 21049), (1162, 18042), (1164, 18011), (1302, 16102), (1358, 15438), (1743, 12028), (2037, 10292), (2324, 9021), (2573, 8148), (2604, 8051), (2716, 7719), (3007, 6972), (3486, 6014), (4074, 5146)]