21008967040

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{887203}}^1$

素因数の和:887259

約数の個数: 64

約数和(自身を含む): 51582040560

約数和(自身を除く): 30573073520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 296, 320, 370, 592, 640, 740, 1184, 1480, 2368, 2960, 4736, 5920, 11840, 23680, 887203, 1774406, 3548812, 4436015, 7097624, 8872030, 14195248, 17744060, 28390496, 32826511, 35488120, 56780992, 65653022, 70976240, 113561984, 131306044, 141952480, 164132555, 262612088, 283904960, 328265110, 525224176, 567809920, 656530220, 1050448352, 1313060440, 2100896704, 2626120880, 4201793408, 5252241760, 10504483520, 21008967040]

約数ペア:

[(1, 21008967040), (2, 10504483520), (4, 5252241760), (5, 4201793408), (8, 2626120880), (10, 2100896704), (16, 1313060440), (20, 1050448352), (32, 656530220), (37, 567809920), (40, 525224176), (64, 328265110), (74, 283904960), (80, 262612088), (128, 164132555), (148, 141952480), (160, 131306044), (185, 113561984), (296, 70976240), (320, 65653022), (370, 56780992), (592, 35488120), (640, 32826511), (740, 28390496), (1184, 17744060), (1480, 14195248), (2368, 8872030), (2960, 7097624), (4736, 4436015), (5920, 3548812), (11840, 1774406), (23680, 887203)]