19928090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 44997120

約数和(自身を除く): 25069030

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 61, 65, 70, 91, 122, 130, 182, 305, 359, 427, 455, 610, 718, 793, 854, 910, 1586, 1795, 2135, 2513, 3590, 3965, 4270, 4667, 5026, 5551, 7930, 9334, 11102, 12565, 21899, 23335, 25130, 27755, 32669, 43798, 46670, 55510, 65338, 109495, 153293, 163345, 218990, 284687, 306586, 326690, 569374, 766465, 1423435, 1532930, 1992809, 2846870, 3985618, 9964045, 19928090]

約数ペア:

[(1, 19928090), (2, 9964045), (5, 3985618), (7, 2846870), (10, 1992809), (13, 1532930), (14, 1423435), (26, 766465), (35, 569374), (61, 326690), (65, 306586), (70, 284687), (91, 218990), (122, 163345), (130, 153293), (182, 109495), (305, 65338), (359, 55510), (427, 46670), (455, 43798), (610, 32669), (718, 27755), (793, 25130), (854, 23335), (910, 21899), (1586, 12565), (1795, 11102), (2135, 9334), (2513, 7930), (3590, 5551), (3965, 5026), (4270, 4667)]