21912016

素因数分解:

$2^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1471}}^1$

素因数の和:1512

約数の個数: 60

約数和(自身を含む): 52020480

約数和(自身を除く): 30108464

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 49, 56, 76, 98, 112, 133, 152, 196, 266, 304, 392, 532, 784, 931, 1064, 1471, 1862, 2128, 2942, 3724, 5884, 7448, 10297, 11768, 14896, 20594, 23536, 27949, 41188, 55898, 72079, 82376, 111796, 144158, 164752, 195643, 223592, 288316, 391286, 447184, 576632, 782572, 1153264, 1369501, 1565144, 2739002, 3130288, 5478004, 10956008, 21912016]

約数ペア:

[(1, 21912016), (2, 10956008), (4, 5478004), (7, 3130288), (8, 2739002), (14, 1565144), (16, 1369501), (19, 1153264), (28, 782572), (38, 576632), (49, 447184), (56, 391286), (76, 288316), (98, 223592), (112, 195643), (133, 164752), (152, 144158), (196, 111796), (266, 82376), (304, 72079), (392, 55898), (532, 41188), (784, 27949), (931, 23536), (1064, 20594), (1471, 14896), (1862, 11768), (2128, 10297), (2942, 7448), (3724, 5884)]