20853840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12413}}^1$

素因数の和:12436

約数の個数: 80

約数和(自身を含む): 73888128

約数和(自身を除く): 53034288

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, 12413, 24826, 37239, 49652, 62065, 74478, 86891, 99304, 124130, 148956, 173782, 186195, 198608, 248260, 260673, 297912, 347564, 372390, 434455, 496520, 521346, 595824, 695128, 744780, 868910, 993040, 1042692, 1303365, 1390256, 1489560, 1737820, 2085384, 2606730, 2979120, 3475640, 4170768, 5213460, 6951280, 10426920, 20853840]

約数ペア:

[(1, 20853840), (2, 10426920), (3, 6951280), (4, 5213460), (5, 4170768), (6, 3475640), (7, 2979120), (8, 2606730), (10, 2085384), (12, 1737820), (14, 1489560), (15, 1390256), (16, 1303365), (20, 1042692), (21, 993040), (24, 868910), (28, 744780), (30, 695128), (35, 595824), (40, 521346), (42, 496520), (48, 434455), (56, 372390), (60, 347564), (70, 297912), (80, 260673), (84, 248260), (105, 198608), (112, 186195), (120, 173782), (140, 148956), (168, 124130), (210, 99304), (240, 86891), (280, 74478), (336, 62065), (420, 49652), (560, 37239), (840, 24826), (1680, 12413)]