20898570

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 128

約数和(自身を含む): 63866880

約数和(自身を除く): 42968310

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 83, 105, 109, 110, 154, 165, 166, 210, 218, 231, 249, 327, 330, 385, 415, 462, 498, 545, 581, 654, 763, 770, 830, 913, 1090, 1155, 1162, 1199, 1245, 1526, 1635, 1743, 1826, 2289, 2310, 2398, 2490, 2739, 2905, 3270, 3486, 3597, 3815, 4565, 4578, 5478, 5810, 5995, 6391, 7194, 7630, 8393, 8715, 9047, 9130, 11445, 11990, 12782, 13695, 16786, 17430, 17985, 18094, 19173, 22890, 25179, 27141, 27390, 31955, 35970, 38346, 41965, 45235, 50358, 54282, 63329, 63910, 83930, 90470, 95865, 99517, 125895, 126658, 135705, 189987, 191730, 199034, 251790, 271410, 298551, 316645, 379974, 497585, 597102, 633290, 696619, 949935, 995170, 1393238, 1492755, 1899870, 2089857, 2985510, 3483095, 4179714, 6966190, 10449285, 20898570]

約数ペア:

[(1, 20898570), (2, 10449285), (3, 6966190), (5, 4179714), (6, 3483095), (7, 2985510), (10, 2089857), (11, 1899870), (14, 1492755), (15, 1393238), (21, 995170), (22, 949935), (30, 696619), (33, 633290), (35, 597102), (42, 497585), (55, 379974), (66, 316645), (70, 298551), (77, 271410), (83, 251790), (105, 199034), (109, 191730), (110, 189987), (154, 135705), (165, 126658), (166, 125895), (210, 99517), (218, 95865), (231, 90470), (249, 83930), (327, 63910), (330, 63329), (385, 54282), (415, 50358), (462, 45235), (498, 41965), (545, 38346), (581, 35970), (654, 31955), (763, 27390), (770, 27141), (830, 25179), (913, 22890), (1090, 19173), (1155, 18094), (1162, 17985), (1199, 17430), (1245, 16786), (1526, 13695), (1635, 12782), (1743, 11990), (1826, 11445), (2289, 9130), (2310, 9047), (2398, 8715), (2490, 8393), (2739, 7630), (2905, 7194), (3270, 6391), (3486, 5995), (3597, 5810), (3815, 5478), (4565, 4578)]