21123120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{283}}^1\times {\mathrm{311}}^1$

素因数の和:610

約数の個数: 80

約数和(自身を含む): 65924352

約数和(自身を除く): 44801232

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 283, 311, 566, 622, 849, 933, 1132, 1244, 1415, 1555, 1698, 1866, 2264, 2488, 2830, 3110, 3396, 3732, 4245, 4528, 4665, 4976, 5660, 6220, 6792, 7464, 8490, 9330, 11320, 12440, 13584, 14928, 16980, 18660, 22640, 24880, 33960, 37320, 67920, 74640, 88013, 176026, 264039, 352052, 440065, 528078, 704104, 880130, 1056156, 1320195, 1408208, 1760260, 2112312, 2640390, 3520520, 4224624, 5280780, 7041040, 10561560, 21123120]

約数ペア:

[(1, 21123120), (2, 10561560), (3, 7041040), (4, 5280780), (5, 4224624), (6, 3520520), (8, 2640390), (10, 2112312), (12, 1760260), (15, 1408208), (16, 1320195), (20, 1056156), (24, 880130), (30, 704104), (40, 528078), (48, 440065), (60, 352052), (80, 264039), (120, 176026), (240, 88013), (283, 74640), (311, 67920), (566, 37320), (622, 33960), (849, 24880), (933, 22640), (1132, 18660), (1244, 16980), (1415, 14928), (1555, 13584), (1698, 12440), (1866, 11320), (2264, 9330), (2488, 8490), (2830, 7464), (3110, 6792), (3396, 6220), (3732, 5660), (4245, 4976), (4528, 4665)]