20621300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:441

約数の個数: 72

約数和(自身を含む): 51871680

約数和(自身を除く): 31250380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 89, 100, 140, 175, 178, 331, 350, 356, 445, 623, 662, 700, 890, 1246, 1324, 1655, 1780, 2225, 2317, 2492, 3115, 3310, 4450, 4634, 6230, 6620, 8275, 8900, 9268, 11585, 12460, 15575, 16550, 23170, 29459, 31150, 33100, 46340, 57925, 58918, 62300, 115850, 117836, 147295, 206213, 231700, 294590, 412426, 589180, 736475, 824852, 1031065, 1472950, 2062130, 2945900, 4124260, 5155325, 10310650, 20621300]

約数ペア:

[(1, 20621300), (2, 10310650), (4, 5155325), (5, 4124260), (7, 2945900), (10, 2062130), (14, 1472950), (20, 1031065), (25, 824852), (28, 736475), (35, 589180), (50, 412426), (70, 294590), (89, 231700), (100, 206213), (140, 147295), (175, 117836), (178, 115850), (331, 62300), (350, 58918), (356, 57925), (445, 46340), (623, 33100), (662, 31150), (700, 29459), (890, 23170), (1246, 16550), (1324, 15575), (1655, 12460), (1780, 11585), (2225, 9268), (2317, 8900), (2492, 8275), (3115, 6620), (3310, 6230), (4450, 4634)]