21056490

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{857}}^1$

素因数の和:893

約数の個数: 128

約数和(自身を含む): 69189120

約数和(自身を除く): 48132630

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 27, 30, 35, 39, 42, 45, 54, 63, 65, 70, 78, 90, 91, 105, 117, 126, 130, 135, 182, 189, 195, 210, 234, 270, 273, 315, 351, 378, 390, 455, 546, 585, 630, 702, 819, 857, 910, 945, 1170, 1365, 1638, 1714, 1755, 1890, 2457, 2571, 2730, 3510, 4095, 4285, 4914, 5142, 5999, 7713, 8190, 8570, 11141, 11998, 12285, 12855, 15426, 17997, 22282, 23139, 24570, 25710, 29995, 33423, 35994, 38565, 46278, 53991, 55705, 59990, 66846, 77130, 77987, 89985, 100269, 107982, 111410, 115695, 155974, 161973, 167115, 179970, 200538, 231390, 233961, 269955, 300807, 323946, 334230, 389935, 467922, 501345, 539910, 601614, 701883, 779870, 809865, 1002690, 1169805, 1403766, 1504035, 1619730, 2105649, 2339610, 3008070, 3509415, 4211298, 7018830, 10528245, 21056490]

約数ペア:

[(1, 21056490), (2, 10528245), (3, 7018830), (5, 4211298), (6, 3509415), (7, 3008070), (9, 2339610), (10, 2105649), (13, 1619730), (14, 1504035), (15, 1403766), (18, 1169805), (21, 1002690), (26, 809865), (27, 779870), (30, 701883), (35, 601614), (39, 539910), (42, 501345), (45, 467922), (54, 389935), (63, 334230), (65, 323946), (70, 300807), (78, 269955), (90, 233961), (91, 231390), (105, 200538), (117, 179970), (126, 167115), (130, 161973), (135, 155974), (182, 115695), (189, 111410), (195, 107982), (210, 100269), (234, 89985), (270, 77987), (273, 77130), (315, 66846), (351, 59990), (378, 55705), (390, 53991), (455, 46278), (546, 38565), (585, 35994), (630, 33423), (702, 29995), (819, 25710), (857, 24570), (910, 23139), (945, 22282), (1170, 17997), (1365, 15426), (1638, 12855), (1714, 12285), (1755, 11998), (1890, 11141), (2457, 8570), (2571, 8190), (2730, 7713), (3510, 5999), (4095, 5142), (4285, 4914)]