18993328

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{257}}^1$

素因数の和:445

約数の個数: 40

約数和(自身を含む): 38390400

約数和(自身を除く): 19397072

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 149, 248, 257, 298, 496, 514, 596, 1028, 1192, 2056, 2384, 4112, 4619, 7967, 9238, 15934, 18476, 31868, 36952, 38293, 63736, 73904, 76586, 127472, 153172, 306344, 612688, 1187083, 2374166, 4748332, 9496664, 18993328]

約数ペア:

[(1, 18993328), (2, 9496664), (4, 4748332), (8, 2374166), (16, 1187083), (31, 612688), (62, 306344), (124, 153172), (149, 127472), (248, 76586), (257, 73904), (298, 63736), (496, 38293), (514, 36952), (596, 31868), (1028, 18476), (1192, 15934), (2056, 9238), (2384, 7967), (4112, 4619)]