641618460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{509221}}^1$

素因数の和:509243

約数の個数: 72

約数和(自身を含む): 2224281696

約数和(自身を除く): 1582663236

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, 509221, 1018442, 1527663, 2036884, 2546105, 3055326, 3564547, 4582989, 5092210, 6110652, 7129094, 7638315, 9165978, 10184420, 10693641, 14258188, 15276630, 17822735, 18331956, 21387282, 22914945, 30553260, 32080923, 35645470, 42774564, 45829890, 53468205, 64161846, 71290940, 91659780, 106936410, 128323692, 160404615, 213872820, 320809230, 641618460]

約数ペア:

[(1, 641618460), (2, 320809230), (3, 213872820), (4, 160404615), (5, 128323692), (6, 106936410), (7, 91659780), (9, 71290940), (10, 64161846), (12, 53468205), (14, 45829890), (15, 42774564), (18, 35645470), (20, 32080923), (21, 30553260), (28, 22914945), (30, 21387282), (35, 18331956), (36, 17822735), (42, 15276630), (45, 14258188), (60, 10693641), (63, 10184420), (70, 9165978), (84, 7638315), (90, 7129094), (105, 6110652), (126, 5092210), (140, 4582989), (180, 3564547), (210, 3055326), (252, 2546105), (315, 2036884), (420, 1527663), (630, 1018442), (1260, 509221)]