18205460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1429}}^1$

素因数の和:1465

約数の個数: 72

約数和(自身を含む): 47927880

約数和(自身を除く): 29722420

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, 1429, 1820, 2548, 2858, 3185, 5716, 6370, 7145, 10003, 12740, 14290, 18577, 20006, 28580, 37154, 40012, 50015, 70021, 74308, 92885, 100030, 130039, 140042, 185770, 200060, 260078, 280084, 350105, 371540, 520156, 650195, 700210, 910273, 1300390, 1400420, 1820546, 2600780, 3641092, 4551365, 9102730, 18205460]

約数ペア:

[(1, 18205460), (2, 9102730), (4, 4551365), (5, 3641092), (7, 2600780), (10, 1820546), (13, 1400420), (14, 1300390), (20, 910273), (26, 700210), (28, 650195), (35, 520156), (49, 371540), (52, 350105), (65, 280084), (70, 260078), (91, 200060), (98, 185770), (130, 140042), (140, 130039), (182, 100030), (196, 92885), (245, 74308), (260, 70021), (364, 50015), (455, 40012), (490, 37154), (637, 28580), (910, 20006), (980, 18577), (1274, 14290), (1429, 12740), (1820, 10003), (2548, 7145), (2858, 6370), (3185, 5716)]