18715008

素因数分解:

$2^7\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:216

約数の個数: 128

約数和(自身を含む): 56206080

約数和(自身を除く): 37491072

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 23, 24, 26, 32, 39, 46, 48, 52, 64, 69, 78, 92, 96, 104, 128, 138, 156, 163, 184, 192, 208, 276, 299, 312, 326, 368, 384, 416, 489, 552, 598, 624, 652, 736, 832, 897, 978, 1104, 1196, 1248, 1304, 1472, 1664, 1794, 1956, 2119, 2208, 2392, 2496, 2608, 2944, 3588, 3749, 3912, 4238, 4416, 4784, 4992, 5216, 6357, 7176, 7498, 7824, 8476, 8832, 9568, 10432, 11247, 12714, 14352, 14996, 15648, 16952, 19136, 20864, 22494, 25428, 28704, 29992, 31296, 33904, 38272, 44988, 48737, 50856, 57408, 59984, 62592, 67808, 89976, 97474, 101712, 114816, 119968, 135616, 146211, 179952, 194948, 203424, 239936, 271232, 292422, 359904, 389896, 406848, 479872, 584844, 719808, 779792, 813696, 1169688, 1439616, 1559584, 2339376, 3119168, 4678752, 6238336, 9357504, 18715008]

約数ペア:

[(1, 18715008), (2, 9357504), (3, 6238336), (4, 4678752), (6, 3119168), (8, 2339376), (12, 1559584), (13, 1439616), (16, 1169688), (23, 813696), (24, 779792), (26, 719808), (32, 584844), (39, 479872), (46, 406848), (48, 389896), (52, 359904), (64, 292422), (69, 271232), (78, 239936), (92, 203424), (96, 194948), (104, 179952), (128, 146211), (138, 135616), (156, 119968), (163, 114816), (184, 101712), (192, 97474), (208, 89976), (276, 67808), (299, 62592), (312, 59984), (326, 57408), (368, 50856), (384, 48737), (416, 44988), (489, 38272), (552, 33904), (598, 31296), (624, 29992), (652, 28704), (736, 25428), (832, 22494), (897, 20864), (978, 19136), (1104, 16952), (1196, 15648), (1248, 14996), (1304, 14352), (1472, 12714), (1664, 11247), (1794, 10432), (1956, 9568), (2119, 8832), (2208, 8476), (2392, 7824), (2496, 7498), (2608, 7176), (2944, 6357), (3588, 5216), (3749, 4992), (3912, 4784), (4238, 4416)]