19426540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{461}}^1$

素因数の和:527

約数の個数: 72

約数和(自身を含む): 48665232

約数和(自身を除く): 29238692

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 140, 172, 196, 215, 245, 301, 430, 461, 490, 602, 860, 922, 980, 1204, 1505, 1844, 2107, 2305, 3010, 3227, 4214, 4610, 6020, 6454, 8428, 9220, 10535, 12908, 16135, 19823, 21070, 22589, 32270, 39646, 42140, 45178, 64540, 79292, 90356, 99115, 112945, 138761, 198230, 225890, 277522, 396460, 451780, 555044, 693805, 971327, 1387610, 1942654, 2775220, 3885308, 4856635, 9713270, 19426540]

約数ペア:

[(1, 19426540), (2, 9713270), (4, 4856635), (5, 3885308), (7, 2775220), (10, 1942654), (14, 1387610), (20, 971327), (28, 693805), (35, 555044), (43, 451780), (49, 396460), (70, 277522), (86, 225890), (98, 198230), (140, 138761), (172, 112945), (196, 99115), (215, 90356), (245, 79292), (301, 64540), (430, 45178), (461, 42140), (490, 39646), (602, 32270), (860, 22589), (922, 21070), (980, 19823), (1204, 16135), (1505, 12908), (1844, 10535), (2107, 9220), (2305, 8428), (3010, 6454), (3227, 6020), (4214, 4610)]