641211900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{305339}}^1$

素因数の和:305363

約数の個数: 72

約数和(自身を含む): 2120280960

約数和(自身を除く): 1479069060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 305339, 610678, 916017, 1221356, 1526695, 1832034, 2137373, 3053390, 3664068, 4274746, 4580085, 6106780, 6412119, 7633475, 8549492, 9160170, 10686865, 12824238, 15266950, 18320340, 21373730, 22900425, 25648476, 30533900, 32060595, 42747460, 45800850, 53434325, 64121190, 91601700, 106868650, 128242380, 160302975, 213737300, 320605950, 641211900]

約数ペア:

[(1, 641211900), (2, 320605950), (3, 213737300), (4, 160302975), (5, 128242380), (6, 106868650), (7, 91601700), (10, 64121190), (12, 53434325), (14, 45800850), (15, 42747460), (20, 32060595), (21, 30533900), (25, 25648476), (28, 22900425), (30, 21373730), (35, 18320340), (42, 15266950), (50, 12824238), (60, 10686865), (70, 9160170), (75, 8549492), (84, 7633475), (100, 6412119), (105, 6106780), (140, 4580085), (150, 4274746), (175, 3664068), (210, 3053390), (300, 2137373), (350, 1832034), (420, 1526695), (525, 1221356), (700, 916017), (1050, 610678), (2100, 305339)]