28685715

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:188

約数の個数: 64

約数和(自身を含む): 52171776

約数和(自身を除く): 23486061

約数列:

[1, 3, 5, 15, 17, 23, 51, 67, 69, 73, 85, 115, 201, 219, 255, 335, 345, 365, 391, 1005, 1095, 1139, 1173, 1241, 1541, 1679, 1955, 3417, 3723, 4623, 4891, 5037, 5695, 5865, 6205, 7705, 8395, 14673, 17085, 18615, 23115, 24455, 25185, 26197, 28543, 73365, 78591, 83147, 85629, 112493, 130985, 142715, 249441, 337479, 392955, 415735, 428145, 562465, 1247205, 1687395, 1912381, 5737143, 9561905, 28685715]

約数ペア:

[(1, 28685715), (3, 9561905), (5, 5737143), (15, 1912381), (17, 1687395), (23, 1247205), (51, 562465), (67, 428145), (69, 415735), (73, 392955), (85, 337479), (115, 249441), (201, 142715), (219, 130985), (255, 112493), (335, 85629), (345, 83147), (365, 78591), (391, 73365), (1005, 28543), (1095, 26197), (1139, 25185), (1173, 24455), (1241, 23115), (1541, 18615), (1679, 17085), (1955, 14673), (3417, 8395), (3723, 7705), (4623, 6205), (4891, 5865), (5037, 5695)]