217273140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{172439}}^1$

素因数の和:172461

約数の個数: 72

約数和(自身を含む): 753217920

約数和(自身を除く): 535944780

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, 172439, 344878, 517317, 689756, 862195, 1034634, 1207073, 1551951, 1724390, 2069268, 2414146, 2586585, 3103902, 3448780, 3621219, 4828292, 5173170, 6035365, 6207804, 7242438, 7759755, 10346340, 10863657, 12070730, 14484876, 15519510, 18106095, 21727314, 24141460, 31039020, 36212190, 43454628, 54318285, 72424380, 108636570, 217273140]

約数ペア:

[(1, 217273140), (2, 108636570), (3, 72424380), (4, 54318285), (5, 43454628), (6, 36212190), (7, 31039020), (9, 24141460), (10, 21727314), (12, 18106095), (14, 15519510), (15, 14484876), (18, 12070730), (20, 10863657), (21, 10346340), (28, 7759755), (30, 7242438), (35, 6207804), (36, 6035365), (42, 5173170), (45, 4828292), (60, 3621219), (63, 3448780), (70, 3103902), (84, 2586585), (90, 2414146), (105, 2069268), (126, 1724390), (140, 1551951), (180, 1207073), (210, 1034634), (252, 862195), (315, 689756), (420, 517317), (630, 344878), (1260, 172439)]