99888880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13721}}^1$

素因数の和:13754

約数の個数: 80

約数和(自身を含む): 285856704

約数和(自身を除く): 185967824

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 3640, 7280, 13721, 27442, 54884, 68605, 96047, 109768, 137210, 178373, 192094, 219536, 274420, 356746, 384188, 480235, 548840, 713492, 768376, 891865, 960470, 1097680, 1248611, 1426984, 1536752, 1783730, 1920940, 2497222, 2853968, 3567460, 3841880, 4994444, 6243055, 7134920, 7683760, 9988888, 12486110, 14269840, 19977776, 24972220, 49944440, 99888880]

約数ペア:

[(1, 99888880), (2, 49944440), (4, 24972220), (5, 19977776), (7, 14269840), (8, 12486110), (10, 9988888), (13, 7683760), (14, 7134920), (16, 6243055), (20, 4994444), (26, 3841880), (28, 3567460), (35, 2853968), (40, 2497222), (52, 1920940), (56, 1783730), (65, 1536752), (70, 1426984), (80, 1248611), (91, 1097680), (104, 960470), (112, 891865), (130, 768376), (140, 713492), (182, 548840), (208, 480235), (260, 384188), (280, 356746), (364, 274420), (455, 219536), (520, 192094), (560, 178373), (728, 137210), (910, 109768), (1040, 96047), (1456, 68605), (1820, 54884), (3640, 27442), (7280, 13721)]