20844135

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:174

約数の個数: 80

約数和(自身を含む): 41713056

約数和(自身を除く): 20868921

約数列:

[1, 3, 5, 9, 13, 15, 27, 37, 39, 45, 65, 81, 107, 111, 117, 135, 185, 195, 321, 333, 351, 405, 481, 535, 555, 585, 963, 999, 1053, 1391, 1443, 1605, 1665, 1755, 2405, 2889, 2997, 3959, 4173, 4329, 4815, 4995, 5265, 6955, 7215, 8667, 11877, 12519, 12987, 14445, 14985, 19795, 20865, 21645, 35631, 37557, 38961, 43335, 51467, 59385, 62595, 64935, 106893, 112671, 154401, 178155, 187785, 194805, 257335, 320679, 463203, 534465, 563355, 772005, 1389609, 1603395, 2316015, 4168827, 6948045, 20844135]

約数ペア:

[(1, 20844135), (3, 6948045), (5, 4168827), (9, 2316015), (13, 1603395), (15, 1389609), (27, 772005), (37, 563355), (39, 534465), (45, 463203), (65, 320679), (81, 257335), (107, 194805), (111, 187785), (117, 178155), (135, 154401), (185, 112671), (195, 106893), (321, 64935), (333, 62595), (351, 59385), (405, 51467), (481, 43335), (535, 38961), (555, 37557), (585, 35631), (963, 21645), (999, 20865), (1053, 19795), (1391, 14985), (1443, 14445), (1605, 12987), (1665, 12519), (1755, 11877), (2405, 8667), (2889, 7215), (2997, 6955), (3959, 5265), (4173, 4995), (4329, 4815)]