19656080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:276

約数の個数: 80

約数和(自身を含む): 49215600

約数和(自身を除く): 29559520

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 97, 136, 149, 170, 194, 272, 298, 340, 388, 485, 596, 680, 745, 776, 970, 1192, 1360, 1490, 1552, 1649, 1940, 2384, 2533, 2980, 3298, 3880, 5066, 5960, 6596, 7760, 8245, 10132, 11920, 12665, 13192, 14453, 16490, 20264, 25330, 26384, 28906, 32980, 40528, 50660, 57812, 65960, 72265, 101320, 115624, 131920, 144530, 202640, 231248, 245701, 289060, 491402, 578120, 982804, 1156240, 1228505, 1965608, 2457010, 3931216, 4914020, 9828040, 19656080]

約数ペア:

[(1, 19656080), (2, 9828040), (4, 4914020), (5, 3931216), (8, 2457010), (10, 1965608), (16, 1228505), (17, 1156240), (20, 982804), (34, 578120), (40, 491402), (68, 289060), (80, 245701), (85, 231248), (97, 202640), (136, 144530), (149, 131920), (170, 115624), (194, 101320), (272, 72265), (298, 65960), (340, 57812), (388, 50660), (485, 40528), (596, 32980), (680, 28906), (745, 26384), (776, 25330), (970, 20264), (1192, 16490), (1360, 14453), (1490, 13192), (1552, 12665), (1649, 11920), (1940, 10132), (2384, 8245), (2533, 7760), (2980, 6596), (3298, 5960), (3880, 5066)]