21101520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{7993}}^1$

素因数の和:8020

約数の個数: 80

約数和(自身を含む): 71370432

約数和(自身を除く): 50268912

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 7993, 15986, 23979, 31972, 39965, 47958, 63944, 79930, 87923, 95916, 119895, 127888, 159860, 175846, 191832, 239790, 263769, 319720, 351692, 383664, 439615, 479580, 527538, 639440, 703384, 879230, 959160, 1055076, 1318845, 1406768, 1758460, 1918320, 2110152, 2637690, 3516920, 4220304, 5275380, 7033840, 10550760, 21101520]

約数ペア:

[(1, 21101520), (2, 10550760), (3, 7033840), (4, 5275380), (5, 4220304), (6, 3516920), (8, 2637690), (10, 2110152), (11, 1918320), (12, 1758460), (15, 1406768), (16, 1318845), (20, 1055076), (22, 959160), (24, 879230), (30, 703384), (33, 639440), (40, 527538), (44, 479580), (48, 439615), (55, 383664), (60, 351692), (66, 319720), (80, 263769), (88, 239790), (110, 191832), (120, 175846), (132, 159860), (165, 127888), (176, 119895), (220, 95916), (240, 87923), (264, 79930), (330, 63944), (440, 47958), (528, 39965), (660, 31972), (880, 23979), (1320, 15986), (2640, 7993)]