19660140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{457}}^1$

素因数の和:711

約数の個数: 72

約数和(自身を含む): 60016320

約数和(自身を除く): 40356180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 239, 457, 478, 717, 914, 956, 1195, 1371, 1434, 1828, 2151, 2285, 2390, 2742, 2868, 3585, 4113, 4302, 4570, 4780, 5484, 6855, 7170, 8226, 8604, 9140, 10755, 13710, 14340, 16452, 20565, 21510, 27420, 41130, 43020, 82260, 109223, 218446, 327669, 436892, 546115, 655338, 983007, 1092230, 1310676, 1638345, 1966014, 2184460, 3276690, 3932028, 4915035, 6553380, 9830070, 19660140]

約数ペア:

[(1, 19660140), (2, 9830070), (3, 6553380), (4, 4915035), (5, 3932028), (6, 3276690), (9, 2184460), (10, 1966014), (12, 1638345), (15, 1310676), (18, 1092230), (20, 983007), (30, 655338), (36, 546115), (45, 436892), (60, 327669), (90, 218446), (180, 109223), (239, 82260), (457, 43020), (478, 41130), (717, 27420), (914, 21510), (956, 20565), (1195, 16452), (1371, 14340), (1434, 13710), (1828, 10755), (2151, 9140), (2285, 8604), (2390, 8226), (2742, 7170), (2868, 6855), (3585, 5484), (4113, 4780), (4302, 4570)]