18671984

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3613}}^1$

素因数の和:3657

約数の個数: 40

約数和(自身を含む): 40332240

約数和(自身を除く): 21660256

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 3613, 5168, 7226, 14452, 28904, 57808, 61421, 68647, 122842, 137294, 245684, 274588, 491368, 549176, 982736, 1098352, 1166999, 2333998, 4667996, 9335992, 18671984]

約数ペア:

[(1, 18671984), (2, 9335992), (4, 4667996), (8, 2333998), (16, 1166999), (17, 1098352), (19, 982736), (34, 549176), (38, 491368), (68, 274588), (76, 245684), (136, 137294), (152, 122842), (272, 68647), (304, 61421), (323, 57808), (646, 28904), (1292, 14452), (2584, 7226), (3613, 5168)]