19751680

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1187}}^1$

素因数の和:1221

約数の個数: 72

約数和(自身を含む): 50993712

約数和(自身を除く): 31242032

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1187, 1280, 1664, 2080, 2374, 3328, 4160, 4748, 5935, 8320, 9496, 11870, 15431, 16640, 18992, 23740, 30862, 37984, 47480, 61724, 75968, 77155, 94960, 123448, 151936, 154310, 189920, 246896, 303872, 308620, 379840, 493792, 617240, 759680, 987584, 1234480, 1519360, 1975168, 2468960, 3950336, 4937920, 9875840, 19751680]

約数ペア:

[(1, 19751680), (2, 9875840), (4, 4937920), (5, 3950336), (8, 2468960), (10, 1975168), (13, 1519360), (16, 1234480), (20, 987584), (26, 759680), (32, 617240), (40, 493792), (52, 379840), (64, 308620), (65, 303872), (80, 246896), (104, 189920), (128, 154310), (130, 151936), (160, 123448), (208, 94960), (256, 77155), (260, 75968), (320, 61724), (416, 47480), (520, 37984), (640, 30862), (832, 23740), (1040, 18992), (1187, 16640), (1280, 15431), (1664, 11870), (2080, 9496), (2374, 8320), (3328, 5935), (4160, 4748)]