217189980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{172373}}^1$

素因数の和:172395

約数の個数: 72

約数和(自身を含む): 752929632

約数和(自身を除く): 535739652

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, 172373, 344746, 517119, 689492, 861865, 1034238, 1206611, 1551357, 1723730, 2068476, 2413222, 2585595, 3102714, 3447460, 3619833, 4826444, 5171190, 6033055, 6205428, 7239666, 7756785, 10342380, 10859499, 12066110, 14479332, 15513570, 18099165, 21718998, 24132220, 31027140, 36198330, 43437996, 54297495, 72396660, 108594990, 217189980]

約数ペア:

[(1, 217189980), (2, 108594990), (3, 72396660), (4, 54297495), (5, 43437996), (6, 36198330), (7, 31027140), (9, 24132220), (10, 21718998), (12, 18099165), (14, 15513570), (15, 14479332), (18, 12066110), (20, 10859499), (21, 10342380), (28, 7756785), (30, 7239666), (35, 6205428), (36, 6033055), (42, 5171190), (45, 4826444), (60, 3619833), (63, 3447460), (70, 3102714), (84, 2585595), (90, 2413222), (105, 2068476), (126, 1723730), (140, 1551357), (180, 1206611), (210, 1034238), (252, 861865), (315, 689492), (420, 517119), (630, 344746), (1260, 172373)]