21485800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 58032000

約数和(自身を除く): 36546200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 103, 140, 149, 175, 200, 206, 280, 298, 350, 412, 515, 596, 700, 721, 745, 824, 1030, 1043, 1192, 1400, 1442, 1490, 2060, 2086, 2575, 2884, 2980, 3605, 3725, 4120, 4172, 5150, 5215, 5768, 5960, 7210, 7450, 8344, 10300, 10430, 14420, 14900, 15347, 18025, 20600, 20860, 26075, 28840, 29800, 30694, 36050, 41720, 52150, 61388, 72100, 76735, 104300, 107429, 122776, 144200, 153470, 208600, 214858, 306940, 383675, 429716, 537145, 613880, 767350, 859432, 1074290, 1534700, 2148580, 2685725, 3069400, 4297160, 5371450, 10742900, 21485800]

約数ペア:

[(1, 21485800), (2, 10742900), (4, 5371450), (5, 4297160), (7, 3069400), (8, 2685725), (10, 2148580), (14, 1534700), (20, 1074290), (25, 859432), (28, 767350), (35, 613880), (40, 537145), (50, 429716), (56, 383675), (70, 306940), (100, 214858), (103, 208600), (140, 153470), (149, 144200), (175, 122776), (200, 107429), (206, 104300), (280, 76735), (298, 72100), (350, 61388), (412, 52150), (515, 41720), (596, 36050), (700, 30694), (721, 29800), (745, 28840), (824, 26075), (1030, 20860), (1043, 20600), (1192, 18025), (1400, 15347), (1442, 14900), (1490, 14420), (2060, 10430), (2086, 10300), (2575, 8344), (2884, 7450), (2980, 7210), (3605, 5960), (3725, 5768), (4120, 5215), (4172, 5150)]