15721216

素因数分解:

$2^8\times 7^1\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:337

約数の個数: 72

約数和(自身を含む): 37151744

約数和(自身を除く): 21430528

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 256, 283, 434, 448, 496, 566, 868, 896, 992, 1132, 1736, 1792, 1981, 1984, 2264, 3472, 3962, 3968, 4528, 6944, 7924, 7936, 8773, 9056, 13888, 15848, 17546, 18112, 27776, 31696, 35092, 36224, 55552, 61411, 63392, 70184, 72448, 122822, 126784, 140368, 245644, 253568, 280736, 491288, 507136, 561472, 982576, 1122944, 1965152, 2245888, 3930304, 7860608, 15721216]

約数ペア:

[(1, 15721216), (2, 7860608), (4, 3930304), (7, 2245888), (8, 1965152), (14, 1122944), (16, 982576), (28, 561472), (31, 507136), (32, 491288), (56, 280736), (62, 253568), (64, 245644), (112, 140368), (124, 126784), (128, 122822), (217, 72448), (224, 70184), (248, 63392), (256, 61411), (283, 55552), (434, 36224), (448, 35092), (496, 31696), (566, 27776), (868, 18112), (896, 17546), (992, 15848), (1132, 13888), (1736, 9056), (1792, 8773), (1981, 7936), (1984, 7924), (2264, 6944), (3472, 4528), (3962, 3968)]