281640688

素因数分解:

$2^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:462

約数の個数: 80

約数和(自身を含む): 638848000

約数和(自身を除く): 357207312

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 79, 112, 139, 158, 229, 278, 316, 458, 553, 556, 632, 916, 973, 1106, 1112, 1264, 1603, 1832, 1946, 2212, 2224, 3206, 3664, 3892, 4424, 6412, 7784, 8848, 10981, 12824, 15568, 18091, 21962, 25648, 31831, 36182, 43924, 63662, 72364, 76867, 87848, 126637, 127324, 144728, 153734, 175696, 222817, 253274, 254648, 289456, 307468, 445634, 506548, 509296, 614936, 891268, 1013096, 1229872, 1782536, 2026192, 2514649, 3565072, 5029298, 10058596, 17602543, 20117192, 35205086, 40234384, 70410172, 140820344, 281640688]

約数ペア:

[(1, 281640688), (2, 140820344), (4, 70410172), (7, 40234384), (8, 35205086), (14, 20117192), (16, 17602543), (28, 10058596), (56, 5029298), (79, 3565072), (112, 2514649), (139, 2026192), (158, 1782536), (229, 1229872), (278, 1013096), (316, 891268), (458, 614936), (553, 509296), (556, 506548), (632, 445634), (916, 307468), (973, 289456), (1106, 254648), (1112, 253274), (1264, 222817), (1603, 175696), (1832, 153734), (1946, 144728), (2212, 127324), (2224, 126637), (3206, 87848), (3664, 76867), (3892, 72364), (4424, 63662), (6412, 43924), (7784, 36182), (8848, 31831), (10981, 25648), (12824, 21962), (15568, 18091)]