21755304

素因数分解:

$2^3\times 3^5\times {\mathrm{19}}^2\times {\mathrm{31}}^1$

素因数の和:90

約数の個数: 144

約数和(自身を含む): 66568320

約数和(自身を除く): 44813016

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 27, 31, 36, 38, 54, 57, 62, 72, 76, 81, 93, 108, 114, 124, 152, 162, 171, 186, 216, 228, 243, 248, 279, 324, 342, 361, 372, 456, 486, 513, 558, 589, 648, 684, 722, 744, 837, 972, 1026, 1083, 1116, 1178, 1368, 1444, 1539, 1674, 1767, 1944, 2052, 2166, 2232, 2356, 2511, 2888, 3078, 3249, 3348, 3534, 4104, 4332, 4617, 4712, 5022, 5301, 6156, 6498, 6696, 7068, 7533, 8664, 9234, 9747, 10044, 10602, 11191, 12312, 12996, 14136, 15066, 15903, 18468, 19494, 20088, 21204, 22382, 25992, 29241, 30132, 31806, 33573, 36936, 38988, 42408, 44764, 47709, 58482, 60264, 63612, 67146, 77976, 87723, 89528, 95418, 100719, 116964, 127224, 134292, 143127, 175446, 190836, 201438, 233928, 268584, 286254, 302157, 350892, 381672, 402876, 572508, 604314, 701784, 805752, 906471, 1145016, 1208628, 1812942, 2417256, 2719413, 3625884, 5438826, 7251768, 10877652, 21755304]

約数ペア:

[(1, 21755304), (2, 10877652), (3, 7251768), (4, 5438826), (6, 3625884), (8, 2719413), (9, 2417256), (12, 1812942), (18, 1208628), (19, 1145016), (24, 906471), (27, 805752), (31, 701784), (36, 604314), (38, 572508), (54, 402876), (57, 381672), (62, 350892), (72, 302157), (76, 286254), (81, 268584), (93, 233928), (108, 201438), (114, 190836), (124, 175446), (152, 143127), (162, 134292), (171, 127224), (186, 116964), (216, 100719), (228, 95418), (243, 89528), (248, 87723), (279, 77976), (324, 67146), (342, 63612), (361, 60264), (372, 58482), (456, 47709), (486, 44764), (513, 42408), (558, 38988), (589, 36936), (648, 33573), (684, 31806), (722, 30132), (744, 29241), (837, 25992), (972, 22382), (1026, 21204), (1083, 20088), (1116, 19494), (1178, 18468), (1368, 15903), (1444, 15066), (1539, 14136), (1674, 12996), (1767, 12312), (1944, 11191), (2052, 10602), (2166, 10044), (2232, 9747), (2356, 9234), (2511, 8664), (2888, 7533), (3078, 7068), (3249, 6696), (3348, 6498), (3534, 6156), (4104, 5301), (4332, 5022), (4617, 4712)]