19388740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 50561280

約数和(自身を除く): 31172540

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 37, 38, 70, 74, 76, 95, 133, 140, 148, 185, 190, 197, 259, 266, 370, 380, 394, 518, 532, 665, 703, 740, 788, 985, 1036, 1295, 1330, 1379, 1406, 1970, 2590, 2660, 2758, 2812, 3515, 3743, 3940, 4921, 5180, 5516, 6895, 7030, 7289, 7486, 9842, 13790, 14060, 14578, 14972, 18715, 19684, 24605, 26201, 27580, 29156, 36445, 37430, 49210, 51023, 52402, 72890, 74860, 98420, 102046, 104804, 131005, 138491, 145780, 204092, 255115, 262010, 276982, 510230, 524020, 553964, 692455, 969437, 1020460, 1384910, 1938874, 2769820, 3877748, 4847185, 9694370, 19388740]

約数ペア:

[(1, 19388740), (2, 9694370), (4, 4847185), (5, 3877748), (7, 2769820), (10, 1938874), (14, 1384910), (19, 1020460), (20, 969437), (28, 692455), (35, 553964), (37, 524020), (38, 510230), (70, 276982), (74, 262010), (76, 255115), (95, 204092), (133, 145780), (140, 138491), (148, 131005), (185, 104804), (190, 102046), (197, 98420), (259, 74860), (266, 72890), (370, 52402), (380, 51023), (394, 49210), (518, 37430), (532, 36445), (665, 29156), (703, 27580), (740, 26201), (788, 24605), (985, 19684), (1036, 18715), (1295, 14972), (1330, 14578), (1379, 14060), (1406, 13790), (1970, 9842), (2590, 7486), (2660, 7289), (2758, 7030), (2812, 6895), (3515, 5516), (3743, 5180), (3940, 4921)]