209439280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{227}}^1\times {\mathrm{607}}^1$

素因数の和:866

約数の個数: 80

約数和(自身を含む): 515681280

約数和(自身を除く): 306242000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 227, 304, 380, 454, 607, 760, 908, 1135, 1214, 1520, 1816, 2270, 2428, 3035, 3632, 4313, 4540, 4856, 6070, 8626, 9080, 9712, 11533, 12140, 17252, 18160, 21565, 23066, 24280, 34504, 43130, 46132, 48560, 57665, 69008, 86260, 92264, 115330, 137789, 172520, 184528, 230660, 275578, 345040, 461320, 551156, 688945, 922640, 1102312, 1377890, 2204624, 2617991, 2755780, 5235982, 5511560, 10471964, 11023120, 13089955, 20943928, 26179910, 41887856, 52359820, 104719640, 209439280]

約数ペア:

[(1, 209439280), (2, 104719640), (4, 52359820), (5, 41887856), (8, 26179910), (10, 20943928), (16, 13089955), (19, 11023120), (20, 10471964), (38, 5511560), (40, 5235982), (76, 2755780), (80, 2617991), (95, 2204624), (152, 1377890), (190, 1102312), (227, 922640), (304, 688945), (380, 551156), (454, 461320), (607, 345040), (760, 275578), (908, 230660), (1135, 184528), (1214, 172520), (1520, 137789), (1816, 115330), (2270, 92264), (2428, 86260), (3035, 69008), (3632, 57665), (4313, 48560), (4540, 46132), (4856, 43130), (6070, 34504), (8626, 24280), (9080, 23066), (9712, 21565), (11533, 18160), (12140, 17252)]