28680704

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:201

約数の個数: 80

約数和(自身を含む): 64162560

約数和(自身を除く): 35481856

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 139, 208, 248, 256, 278, 403, 416, 496, 512, 556, 806, 832, 992, 1112, 1612, 1664, 1807, 1984, 2224, 3224, 3328, 3614, 3968, 4309, 4448, 6448, 6656, 7228, 7936, 8618, 8896, 12896, 14456, 15872, 17236, 17792, 25792, 28912, 34472, 35584, 51584, 56017, 57824, 68944, 71168, 103168, 112034, 115648, 137888, 206336, 224068, 231296, 275776, 448136, 462592, 551552, 896272, 925184, 1103104, 1792544, 2206208, 3585088, 7170176, 14340352, 28680704]

約数ペア:

[(1, 28680704), (2, 14340352), (4, 7170176), (8, 3585088), (13, 2206208), (16, 1792544), (26, 1103104), (31, 925184), (32, 896272), (52, 551552), (62, 462592), (64, 448136), (104, 275776), (124, 231296), (128, 224068), (139, 206336), (208, 137888), (248, 115648), (256, 112034), (278, 103168), (403, 71168), (416, 68944), (496, 57824), (512, 56017), (556, 51584), (806, 35584), (832, 34472), (992, 28912), (1112, 25792), (1612, 17792), (1664, 17236), (1807, 15872), (1984, 14456), (2224, 12896), (3224, 8896), (3328, 8618), (3614, 7936), (3968, 7228), (4309, 6656), (4448, 6448)]