400582980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{317923}}^1$

素因数の和:317945

約数の個数: 72

約数和(自身を含む): 1388692032

約数和(自身を除く): 988109052

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 317923, 635846, 953769, 1271692, 1589615, 1907538, 2225461, 2861307, 3179230, 3815076, 4450922, 4768845, 5722614, 6358460, 6676383, 8901844, 9537690, 11127305, 11445228, 13352766, 14306535, 19075380, 20029149, 22254610, 26705532, 28613070, 33381915, 40058298, 44509220, 57226140, 66763830, 80116596, 100145745, 133527660, 200291490, 400582980]

約数ペア:

[(1, 400582980), (2, 200291490), (3, 133527660), (4, 100145745), (5, 80116596), (6, 66763830), (7, 57226140), (9, 44509220), (10, 40058298), (12, 33381915), (14, 28613070), (15, 26705532), (18, 22254610), (20, 20029149), (21, 19075380), (28, 14306535), (30, 13352766), (35, 11445228), (36, 11127305), (42, 9537690), (45, 8901844), (60, 6676383), (63, 6358460), (70, 5722614), (84, 4768845), (90, 4450922), (105, 3815076), (126, 3179230), (140, 2861307), (180, 2225461), (210, 1907538), (252, 1589615), (315, 1271692), (420, 953769), (630, 635846), (1260, 317923)]