19811142

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:459

約数の個数: 80

約数和(自身を含む): 50006880

約数和(自身を除く): 30195738

約数列:

[1, 2, 3, 6, 9, 13, 18, 23, 26, 27, 39, 46, 54, 69, 78, 81, 117, 138, 162, 207, 234, 299, 351, 409, 414, 598, 621, 702, 818, 897, 1053, 1227, 1242, 1794, 1863, 2106, 2454, 2691, 3681, 3726, 5317, 5382, 7362, 8073, 9407, 10634, 11043, 15951, 16146, 18814, 22086, 24219, 28221, 31902, 33129, 47853, 48438, 56442, 66258, 84663, 95706, 122291, 143559, 169326, 244582, 253989, 287118, 366873, 430677, 507978, 733746, 761967, 861354, 1100619, 1523934, 2201238, 3301857, 6603714, 9905571, 19811142]

約数ペア:

[(1, 19811142), (2, 9905571), (3, 6603714), (6, 3301857), (9, 2201238), (13, 1523934), (18, 1100619), (23, 861354), (26, 761967), (27, 733746), (39, 507978), (46, 430677), (54, 366873), (69, 287118), (78, 253989), (81, 244582), (117, 169326), (138, 143559), (162, 122291), (207, 95706), (234, 84663), (299, 66258), (351, 56442), (409, 48438), (414, 47853), (598, 33129), (621, 31902), (702, 28221), (818, 24219), (897, 22086), (1053, 18814), (1227, 16146), (1242, 15951), (1794, 11043), (1863, 10634), (2106, 9407), (2454, 8073), (2691, 7362), (3681, 5382), (3726, 5317)]