21384108

素因数分解:

$2^2\times 3^3\times {\mathrm{389}}^1\times {\mathrm{509}}^1$

素因数の和:911

約数の個数: 48

約数和(自身を含む): 55692000

約数和(自身を除く): 34307892

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 389, 509, 778, 1018, 1167, 1527, 1556, 2036, 2334, 3054, 3501, 4581, 4668, 6108, 7002, 9162, 10503, 13743, 14004, 18324, 21006, 27486, 42012, 54972, 198001, 396002, 594003, 792004, 1188006, 1782009, 2376012, 3564018, 5346027, 7128036, 10692054, 21384108]

約数ペア:

[(1, 21384108), (2, 10692054), (3, 7128036), (4, 5346027), (6, 3564018), (9, 2376012), (12, 1782009), (18, 1188006), (27, 792004), (36, 594003), (54, 396002), (108, 198001), (389, 54972), (509, 42012), (778, 27486), (1018, 21006), (1167, 18324), (1527, 14004), (1556, 13743), (2036, 10503), (2334, 9162), (3054, 7002), (3501, 6108), (4581, 4668)]