21135800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{487}}^1$

素因数の和:541

約数の個数: 96

約数和(自身を含む): 58091520

約数和(自身を除く): 36955720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 50, 56, 62, 70, 100, 124, 140, 155, 175, 200, 217, 248, 280, 310, 350, 434, 487, 620, 700, 775, 868, 974, 1085, 1240, 1400, 1550, 1736, 1948, 2170, 2435, 3100, 3409, 3896, 4340, 4870, 5425, 6200, 6818, 8680, 9740, 10850, 12175, 13636, 15097, 17045, 19480, 21700, 24350, 27272, 30194, 34090, 43400, 48700, 60388, 68180, 75485, 85225, 97400, 105679, 120776, 136360, 150970, 170450, 211358, 301940, 340900, 377425, 422716, 528395, 603880, 681800, 754850, 845432, 1056790, 1509700, 2113580, 2641975, 3019400, 4227160, 5283950, 10567900, 21135800]

約数ペア:

[(1, 21135800), (2, 10567900), (4, 5283950), (5, 4227160), (7, 3019400), (8, 2641975), (10, 2113580), (14, 1509700), (20, 1056790), (25, 845432), (28, 754850), (31, 681800), (35, 603880), (40, 528395), (50, 422716), (56, 377425), (62, 340900), (70, 301940), (100, 211358), (124, 170450), (140, 150970), (155, 136360), (175, 120776), (200, 105679), (217, 97400), (248, 85225), (280, 75485), (310, 68180), (350, 60388), (434, 48700), (487, 43400), (620, 34090), (700, 30194), (775, 27272), (868, 24350), (974, 21700), (1085, 19480), (1240, 17045), (1400, 15097), (1550, 13636), (1736, 12175), (1948, 10850), (2170, 9740), (2435, 8680), (3100, 6818), (3409, 6200), (3896, 5425), (4340, 4870)]