11921840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:430

約数の個数: 80

約数和(自身を含む): 32289600

約数和(自身を除く): 20367760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 349, 427, 488, 560, 610, 698, 854, 976, 1220, 1396, 1708, 1745, 2135, 2440, 2443, 2792, 3416, 3490, 4270, 4880, 4886, 5584, 6832, 6980, 8540, 9772, 12215, 13960, 17080, 19544, 21289, 24430, 27920, 34160, 39088, 42578, 48860, 85156, 97720, 106445, 149023, 170312, 195440, 212890, 298046, 340624, 425780, 596092, 745115, 851560, 1192184, 1490230, 1703120, 2384368, 2980460, 5960920, 11921840]

約数ペア:

[(1, 11921840), (2, 5960920), (4, 2980460), (5, 2384368), (7, 1703120), (8, 1490230), (10, 1192184), (14, 851560), (16, 745115), (20, 596092), (28, 425780), (35, 340624), (40, 298046), (56, 212890), (61, 195440), (70, 170312), (80, 149023), (112, 106445), (122, 97720), (140, 85156), (244, 48860), (280, 42578), (305, 39088), (349, 34160), (427, 27920), (488, 24430), (560, 21289), (610, 19544), (698, 17080), (854, 13960), (976, 12215), (1220, 9772), (1396, 8540), (1708, 6980), (1745, 6832), (2135, 5584), (2440, 4886), (2443, 4880), (2792, 4270), (3416, 3490)]