19887280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2089}}^1$

素因数の和:2126

約数の個数: 80

約数和(自身を含む): 55978560

約数和(自身を除く): 36091280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2089, 2380, 4178, 4760, 8356, 9520, 10445, 14623, 16712, 20890, 29246, 33424, 35513, 41780, 58492, 71026, 73115, 83560, 116984, 142052, 146230, 167120, 177565, 233968, 248591, 284104, 292460, 355130, 497182, 568208, 584920, 710260, 994364, 1169840, 1242955, 1420520, 1988728, 2485910, 2841040, 3977456, 4971820, 9943640, 19887280]

約数ペア:

[(1, 19887280), (2, 9943640), (4, 4971820), (5, 3977456), (7, 2841040), (8, 2485910), (10, 1988728), (14, 1420520), (16, 1242955), (17, 1169840), (20, 994364), (28, 710260), (34, 584920), (35, 568208), (40, 497182), (56, 355130), (68, 292460), (70, 284104), (80, 248591), (85, 233968), (112, 177565), (119, 167120), (136, 146230), (140, 142052), (170, 116984), (238, 83560), (272, 73115), (280, 71026), (340, 58492), (476, 41780), (560, 35513), (595, 33424), (680, 29246), (952, 20890), (1190, 16712), (1360, 14623), (1904, 10445), (2089, 9520), (2380, 8356), (4178, 4760)]