19778220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1427}}^1$

素因数の和:1460

約数の個数: 144

約数和(自身を含む): 74850048

約数和(自身を除く): 55071828

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 126, 132, 140, 154, 165, 180, 198, 210, 220, 231, 252, 308, 315, 330, 385, 396, 420, 462, 495, 630, 660, 693, 770, 924, 990, 1155, 1260, 1386, 1427, 1540, 1980, 2310, 2772, 2854, 3465, 4281, 4620, 5708, 6930, 7135, 8562, 9989, 12843, 13860, 14270, 15697, 17124, 19978, 21405, 25686, 28540, 29967, 31394, 39956, 42810, 47091, 49945, 51372, 59934, 62788, 64215, 78485, 85620, 89901, 94182, 99890, 109879, 119868, 128430, 141273, 149835, 156970, 179802, 188364, 199780, 219758, 235455, 256860, 282546, 299670, 313940, 329637, 359604, 439516, 449505, 470910, 549395, 565092, 599340, 659274, 706365, 899010, 941820, 988911, 1098790, 1318548, 1412730, 1648185, 1798020, 1977822, 2197580, 2825460, 3296370, 3955644, 4944555, 6592740, 9889110, 19778220]

約数ペア:

[(1, 19778220), (2, 9889110), (3, 6592740), (4, 4944555), (5, 3955644), (6, 3296370), (7, 2825460), (9, 2197580), (10, 1977822), (11, 1798020), (12, 1648185), (14, 1412730), (15, 1318548), (18, 1098790), (20, 988911), (21, 941820), (22, 899010), (28, 706365), (30, 659274), (33, 599340), (35, 565092), (36, 549395), (42, 470910), (44, 449505), (45, 439516), (55, 359604), (60, 329637), (63, 313940), (66, 299670), (70, 282546), (77, 256860), (84, 235455), (90, 219758), (99, 199780), (105, 188364), (110, 179802), (126, 156970), (132, 149835), (140, 141273), (154, 128430), (165, 119868), (180, 109879), (198, 99890), (210, 94182), (220, 89901), (231, 85620), (252, 78485), (308, 64215), (315, 62788), (330, 59934), (385, 51372), (396, 49945), (420, 47091), (462, 42810), (495, 39956), (630, 31394), (660, 29967), (693, 28540), (770, 25686), (924, 21405), (990, 19978), (1155, 17124), (1260, 15697), (1386, 14270), (1427, 13860), (1540, 12843), (1980, 9989), (2310, 8562), (2772, 7135), (2854, 6930), (3465, 5708), (4281, 4620)]