21670320

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12899}}^1$

素因数の和:12922

約数の個数: 80

約数和(自身を含む): 76780800

約数和(自身を除く): 55110480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12899, 25798, 38697, 51596, 64495, 77394, 90293, 103192, 128990, 154788, 180586, 193485, 206384, 257980, 270879, 309576, 361172, 386970, 451465, 515960, 541758, 619152, 722344, 773940, 902930, 1031920, 1083516, 1354395, 1444688, 1547880, 1805860, 2167032, 2708790, 3095760, 3611720, 4334064, 5417580, 7223440, 10835160, 21670320]

約数ペア:

[(1, 21670320), (2, 10835160), (3, 7223440), (4, 5417580), (5, 4334064), (6, 3611720), (7, 3095760), (8, 2708790), (10, 2167032), (12, 1805860), (14, 1547880), (15, 1444688), (16, 1354395), (20, 1083516), (21, 1031920), (24, 902930), (28, 773940), (30, 722344), (35, 619152), (40, 541758), (42, 515960), (48, 451465), (56, 386970), (60, 361172), (70, 309576), (80, 270879), (84, 257980), (105, 206384), (112, 193485), (120, 180586), (140, 154788), (168, 128990), (210, 103192), (240, 90293), (280, 77394), (336, 64495), (420, 51596), (560, 38697), (840, 25798), (1680, 12899)]