18179980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1427}}^1$

素因数の和:1463

約数の個数: 72

約数和(自身を含む): 47860848

約数和(自身を除く): 29680868

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1427, 1820, 2548, 2854, 3185, 5708, 6370, 7135, 9989, 12740, 14270, 18551, 19978, 28540, 37102, 39956, 49945, 69923, 74204, 92755, 99890, 129857, 139846, 185510, 199780, 259714, 279692, 349615, 371020, 519428, 649285, 699230, 908999, 1298570, 1398460, 1817998, 2597140, 3635996, 4544995, 9089990, 18179980]

約数ペア:

[(1, 18179980), (2, 9089990), (4, 4544995), (5, 3635996), (7, 2597140), (10, 1817998), (13, 1398460), (14, 1298570), (20, 908999), (26, 699230), (28, 649285), (35, 519428), (49, 371020), (52, 349615), (65, 279692), (70, 259714), (91, 199780), (98, 185510), (130, 139846), (140, 129857), (182, 99890), (196, 92755), (245, 74204), (260, 69923), (364, 49945), (455, 39956), (490, 37102), (637, 28540), (910, 19978), (980, 18551), (1274, 14270), (1427, 12740), (1820, 9989), (2548, 7135), (2854, 6370), (3185, 5708)]