18890656

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:317

約数の個数: 48

約数和(自身を含む): 38949120

約数和(自身を除く): 20058464

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 137, 139, 248, 274, 278, 496, 548, 556, 992, 1096, 1112, 2192, 2224, 4247, 4309, 4384, 4448, 8494, 8618, 16988, 17236, 19043, 33976, 34472, 38086, 67952, 68944, 76172, 135904, 137888, 152344, 304688, 590333, 609376, 1180666, 2361332, 4722664, 9445328, 18890656]

約数ペア:

[(1, 18890656), (2, 9445328), (4, 4722664), (8, 2361332), (16, 1180666), (31, 609376), (32, 590333), (62, 304688), (124, 152344), (137, 137888), (139, 135904), (248, 76172), (274, 68944), (278, 67952), (496, 38086), (548, 34472), (556, 33976), (992, 19043), (1096, 17236), (1112, 16988), (2192, 8618), (2224, 8494), (4247, 4448), (4309, 4384)]