20178960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1013}}^1$

素因数の和:1112

約数の個数: 80

約数和(自身を含む): 63370944

約数和(自身を除く): 43191984

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 83, 120, 166, 240, 249, 332, 415, 498, 664, 830, 996, 1013, 1245, 1328, 1660, 1992, 2026, 2490, 3039, 3320, 3984, 4052, 4980, 5065, 6078, 6640, 8104, 9960, 10130, 12156, 15195, 16208, 19920, 20260, 24312, 30390, 40520, 48624, 60780, 81040, 84079, 121560, 168158, 243120, 252237, 336316, 420395, 504474, 672632, 840790, 1008948, 1261185, 1345264, 1681580, 2017896, 2522370, 3363160, 4035792, 5044740, 6726320, 10089480, 20178960]

約数ペア:

[(1, 20178960), (2, 10089480), (3, 6726320), (4, 5044740), (5, 4035792), (6, 3363160), (8, 2522370), (10, 2017896), (12, 1681580), (15, 1345264), (16, 1261185), (20, 1008948), (24, 840790), (30, 672632), (40, 504474), (48, 420395), (60, 336316), (80, 252237), (83, 243120), (120, 168158), (166, 121560), (240, 84079), (249, 81040), (332, 60780), (415, 48624), (498, 40520), (664, 30390), (830, 24312), (996, 20260), (1013, 19920), (1245, 16208), (1328, 15195), (1660, 12156), (1992, 10130), (2026, 9960), (2490, 8104), (3039, 6640), (3320, 6078), (3984, 5065), (4052, 4980)]